release 0.2.1

30 files changed, 970 insertions, 628 deletions

diff --git a/core/bash.html b/core/bash.html
index 0ea3ade..2c1f6e9 100644
--- a/core/bash.html
+++ b/core/bash.html
@@ -126,7 +126,7 @@
         <p>
         This is part of the c9-doc Manual.
         Copyright (C) 2016
-        Silvino Silva.
+        c9 team.
         See the file <a href="../fdl-1.3-standalone.html">Gnu Free Documentation License</a>
         for copying conditions.</p>
 
diff --git a/core/conf/exim/aliases b/core/conf/exim/aliases
new file mode 100644
index 0000000..2efb04c
--- /dev/null
+++ b/core/conf/exim/aliases
@@ -0,0 +1,37 @@
+# Default aliases file, installed by Exim. This file contains no real aliases.
+# You should edit it to taste.
+
+# The following alias is required by the mail RFCs 2821 and 2822.
+# Set it to the address of a HUMAN who deals with this system's mail problems.
+
+postmaster: c9admin
+
+# It is also common to set the following alias so that if anybody replies to a
+# bounce message from this host, the reply goes to the postmaster.
+
+mailer-daemon: postmaster
+
+# You should also set up an alias for messages to root, because it is not
+# usually a good idea to deliver mail as root.
+
+root: postmaster
+
+# It is a good idea to redirect any messages sent to system accounts so tha
+# they don't just get ignored. Here are some common examples:
+
+bin: root
+daemon: root
+ftp: root
+nobody: root
+operator: root
+uucp: root
+
+# You should check your /etc/passwd for any others.
+
+# Other commonly enountered aliases are:
+#
+# abuse:       the person dealing with network and mail abuse
+# hostmaster:  the person dealing with DNS problems
+# webmaster:   the person dealing with your web site
+
+####
diff --git a/core/conf/exim/exim.conf b/core/conf/exim/exim.conf
new file mode 100644
index 0000000..47a6094
--- /dev/null
+++ b/core/conf/exim/exim.conf
@@ -0,0 +1,890 @@
+######################################################################
+#                  Runtime configuration file for Exim               #
+######################################################################
+
+
+# This is a default configuration file which will operate correctly in
+# uncomplicated installations. Please see the manual for a complete list
+# of all the runtime configuration options that can be included in a
+# configuration file. There are many more than are mentioned here. The
+# manual is in the file doc/spec.txt in the Exim distribution as a plain
+# ASCII file. Other formats (PostScript, Texinfo, HTML, PDF) are available
+# from the Exim ftp sites. The manual is also online at the Exim web sites.
+
+
+# This file is divided into several parts, all but the first of which are
+# headed by a line starting with the word "begin". Only those parts that
+# are required need to be present. Blank lines, and lines starting with #
+# are ignored.
+
+
+########### IMPORTANT ########## IMPORTANT ########### IMPORTANT ###########
+#                                                                          #
+# Whenever you change Exim's configuration file, you *must* remember to    #
+# HUP the Exim daemon, because it will not pick up the new configuration   #
+# until you do. However, any other Exim processes that are started, for    #
+# example, a process started by an MUA in order to send a message, will    #
+# see the new configuration as soon as it is in place.                     #
+#                                                                          #
+# You do not need to HUP the daemon for changes in auxiliary files that    #
+# are referenced from this file. They are read every time they are used.   #
+#                                                                          #
+# It is usually a good idea to test a new configuration for syntactic      #
+# correctness before installing it (for example, by running the command    #
+# "exim -C /config/file.new -bV").                                         #
+#                                                                          #
+########### IMPORTANT ########## IMPORTANT ########### IMPORTANT ###########
+
+
+
+######################################################################
+#                    MAIN CONFIGURATION SETTINGS                     #
+######################################################################
+#
+
+# Specify your host's canonical name here. This should normally be the fully
+# qualified "official" name of your host. If this option is not set, the
+# uname() function is called to obtain the name. In many cases this does
+# the right thing and you need not set anything explicitly.
+
+# primary_hostname =
+
+
+# The next three settings create two lists of domains and one list of hosts.
+# These lists are referred to later in this configuration using the syntax
+# +local_domains, +relay_to_domains, and +relay_from_hosts, respectively. They
+# are all colon-separated lists:
+
+domainlist local_domains = @ : localhost
+domainlist relay_to_domains =
+hostlist   relay_from_hosts = localhost
+# (We rely upon hostname resolution working for localhost, because the default
+# uncommented configuration needs to work in IPv4-only environments.)
+
+# Most straightforward access control requirements can be obtained by
+# appropriate settings of the above options. In more complicated situations,
+# you may need to modify the Access Control Lists (ACLs) which appear later in
+# this file.
+
+# The first setting specifies your local domains, for example:
+#
+#   domainlist local_domains = my.first.domain : my.second.domain
+#
+# You can use "@" to mean "the name of the local host", as in the default
+# setting above. This is the name that is specified by primary_hostname,
+# as specified above (or defaulted). If you do not want to do any local
+# deliveries, remove the "@" from the setting above. If you want to accept mail
+# addressed to your host's literal IP address, for example, mail addressed to
+# "user@[192.168.23.44]", you can add "@[]" as an item in the local domains
+# list. You also need to uncomment "allow_domain_literals" below. This is not
+# recommended for today's Internet.
+
+# The second setting specifies domains for which your host is an incoming relay.
+# If you are not doing any relaying, you should leave the list empty. However,
+# if your host is an MX backup or gateway of some kind for some domains, you
+# must set relay_to_domains to match those domains. For example:
+#
+# domainlist relay_to_domains = *.myco.com : my.friend.org
+#
+# This will allow any host to relay through your host to those domains.
+# See the section of the manual entitled "Control of relaying" for more
+# information.
+
+# The third setting specifies hosts that can use your host as an outgoing relay
+# to any other host on the Internet. Such a setting commonly refers to a
+# complete local network as well as the localhost. For example:
+#
+# hostlist relay_from_hosts = <; 127.0.0.1 ; ::1 ; 192.168.0.0/16
+#
+# The "/16" is a bit mask (CIDR notation), not a number of hosts. Note that you
+# have to include 127.0.0.1 if you want to allow processes on your host to send
+# SMTP mail by using the loopback address. A number of MUAs use this method of
+# sending mail.  Often, connections are made to "localhost", which might be ::1
+# on IPv6-enabled hosts.  Do not forget CIDR for your IPv6 networks.
+
+# All three of these lists may contain many different kinds of item, including
+# wildcarded names, regular expressions, and file lookups. See the reference
+# manual for details. The lists above are used in the access control lists for
+# checking incoming messages. The names of these ACLs are defined here:
+
+acl_smtp_rcpt = acl_check_rcpt
+acl_smtp_data = acl_check_data
+
+# You should not change those settings until you understand how ACLs work.
+
+
+# If you are running a version of Exim that was compiled with the content-
+# scanning extension, you can cause incoming messages to be automatically
+# scanned for viruses. You have to modify the configuration in two places to
+# set this up. The first of them is here, where you define the interface to
+# your scanner. This example is typical for ClamAV; see the manual for details
+# of what to set for other virus scanners. The second modification is in the
+# acl_check_data access control list (see below).
+
+# av_scanner = clamd:/tmp/clamd
+
+
+# For spam scanning, there is a similar option that defines the interface to
+# SpamAssassin. You do not need to set this if you are using the default, which
+# is shown in this commented example. As for virus scanning, you must also
+# modify the acl_check_data access control list to enable spam scanning.
+
+# spamd_address = 127.0.0.1 783
+
+
+# If Exim is compiled with support for TLS, you may want to enable the
+# following options so that Exim allows clients to make encrypted
+# connections. In the authenticators section below, there are template
+# configurations for plaintext username/password authentication. This kind
+# of authentication is only safe when used within a TLS connection, so the
+# authenticators will only work if the following TLS settings are turned on
+# as well.
+
+# Allow any client to use TLS.
+
+tls_advertise_hosts = *
+
+# Specify the location of the Exim server's TLS certificate and private key.
+# The private key must not be encrypted (password protected). You can put
+# the certificate and private key in the same file, in which case you only
+# need the first setting, or in separate files, in which case you need both
+# options.
+
+tls_certificate = /etc/ssl/certs/exim.crt
+tls_privatekey = /etc/ssl/keys/exim.key
+
+# In order to support roaming users who wish to send email from anywhere,
+# you may want to make Exim listen on other ports as well as port 25, in
+# case these users need to send email from a network that blocks port 25.
+# The standard port for this purpose is port 587, the "message submission"
+# port. See RFC 4409 for details. Microsoft MUAs cannot be configured to
+# talk the message submission protocol correctly, so if you need to support
+# them you should also allow TLS-on-connect on the traditional but
+# non-standard port 465.
+
+daemon_smtp_ports = 25 : 465 : 587
+tls_on_connect_ports = 465
+
+
+# Specify the domain you want to be added to all unqualified addresses
+# here. An unqualified address is one that does not contain an "@" character
+# followed by a domain. For example, "caesar@rome.example" is a fully qualified
+# address, but the string "caesar" (i.e. just a login name) is an unqualified
+# email address. Unqualified addresses are accepted only from local callers by
+# default. See the recipient_unqualified_hosts option if you want to permit
+# unqualified addresses from remote sources. If this option is not set, the
+# primary_hostname value is used for qualification.
+
+# qualify_domain =
+
+
+# If you want unqualified recipient addresses to be qualified with a different
+# domain to unqualified sender addresses, specify the recipient domain here.
+# If this option is not set, the qualify_domain value is used.
+
+# qualify_recipient =
+
+
+# The following line must be uncommented if you want Exim to recognize
+# addresses of the form "user@[10.11.12.13]" that is, with a "domain literal"
+# (an IP address) instead of a named domain. The RFCs still require this form,
+# but it makes little sense to permit mail to be sent to specific hosts by
+# their IP address in the modern Internet. This ancient format has been used
+# by those seeking to abuse hosts by using them for unwanted relaying. If you
+# really do want to support domain literals, uncomment the following line, and
+# see also the "domain_literal" router below.
+
+# allow_domain_literals
+
+
+# No deliveries will ever be run under the uids of users specified by
+# never_users (a colon-separated list). An attempt to do so causes a panic
+# error to be logged, and the delivery to be deferred. This is a paranoic
+# safety catch. There is an even stronger safety catch in the form of the
+# FIXED_NEVER_USERS setting in the configuration for building Exim. The list of
+# users that it specifies is built into the binary, and cannot be changed. The
+# option below just adds additional users to the list. The default for
+# FIXED_NEVER_USERS is "root", but just to be absolutely sure, the default here
+# is also "root".
+
+# Note that the default setting means you cannot deliver mail addressed to root
+# as if it were a normal user. This isn't usually a problem, as most sites have
+# an alias for root that redirects such mail to a human administrator.
+
+never_users = root
+
+
+# The setting below causes Exim to do a reverse DNS lookup on all incoming
+# IP calls, in order to get the true host name. If you feel this is too
+# expensive, you can specify the networks for which a lookup is done, or
+# remove the setting entirely.
+
+host_lookup = *
+
+
+# The settings below cause Exim to make RFC 1413 (ident) callbacks
+# for all incoming SMTP calls. You can limit the hosts to which these
+# calls are made, and/or change the timeout that is used. If you set
+# the timeout to zero, all RFC 1413 calls are disabled. RFC 1413 calls
+# are cheap and can provide useful information for tracing problem
+# messages, but some hosts and firewalls have problems with them.
+# This can result in a timeout instead of an immediate refused
+# connection, leading to delays on starting up SMTP sessions.
+# (The default was reduced from 30s to 5s for release 4.61. and to
+# disabled for release 4.86)
+#
+#rfc1413_hosts = *
+#rfc1413_query_timeout = 5s
+
+
+# Enable an efficiency feature.  We advertise the feature; clients
+# may request to use it.  For multi-recipient mails we then can
+# reject or accept per-user after the message is received.
+#
+prdr_enable = true
+
+
+# By default, Exim expects all envelope addresses to be fully qualified, that
+# is, they must contain both a local part and a domain. If you want to accept
+# unqualified addresses (just a local part) from certain hosts, you can specify
+# these hosts by setting one or both of
+#
+# sender_unqualified_hosts =
+# recipient_unqualified_hosts =
+#
+# to control sender and recipient addresses, respectively. When this is done,
+# unqualified addresses are qualified using the settings of qualify_domain
+# and/or qualify_recipient (see above).
+
+
+# Unless you run a high-volume site you probably want more logging
+# detail than the default.  Adjust to suit.
+
+log_selector = +smtp_protocol_error +smtp_syntax_error \
+	+tls_certificate_verified
+#      +address_rewrite \
+#        +all_parents \
+#        +arguments \
+#        +connection_reject \
+#        +delay_delivery \
+#        +delivery_size \
+#        +dnslist_defer \
+#        +incoming_interface \
+#        +incoming_port \
+#        +lost_incoming_connection \
+#        +queue_run \
+#        +received_sender \
+#        +received_recipients \
+#        +retry_defer \
+#        +sender_on_delivery \
+#        +size_reject \
+#        +skip_delivery \
+#        +smtp_confirmation \
+#        +smtp_connection \
+#        +smtp_protocol_error \
+#        +smtp_syntax_error \
+#        +subject \
+#        +tls_cipher \
+#        +tls_peerdn \
+
+
+
+
+# If you want Exim to support the "percent hack" for certain domains,
+# uncomment the following line and provide a list of domains. The "percent
+# hack" is the feature by which mail addressed to x%y@z (where z is one of
+# the domains listed) is locally rerouted to x@y and sent on. If z is not one
+# of the "percent hack" domains, x%y is treated as an ordinary local part. This
+# hack is rarely needed nowadays; you should not enable it unless you are sure
+# that you really need it.
+#
+# percent_hack_domains =
+#
+# As well as setting this option you will also need to remove the test
+# for local parts containing % in the ACL definition below.
+
+
+# When Exim can neither deliver a message nor return it to sender, it "freezes"
+# the delivery error message (aka "bounce message"). There are also other
+# circumstances in which messages get frozen. They will stay on the queue for
+# ever unless one of the following options is set.
+
+# This option unfreezes frozen bounce messages after two days, tries
+# once more to deliver them, and ignores any delivery failures.
+
+ignore_bounce_errors_after = 2d
+
+# This option cancels (removes) frozen messages that are older than a week.
+
+timeout_frozen_after = 7d
+
+
+# By default, messages that are waiting on Exim's queue are all held in a
+# single directory called "input" which it itself within Exim's spool
+# directory. (The default spool directory is specified when Exim is built, and
+# is often /var/spool/exim/.) Exim works best when its queue is kept short, but
+# there are circumstances where this is not always possible. If you uncomment
+# the setting below, messages on the queue are held in 62 subdirectories of
+# "input" instead of all in the same directory. The subdirectories are called
+# 0, 1, ... A, B, ... a, b, ... z. This has two benefits: (1) If your file
+# system degrades with many files in one directory, this is less likely to
+# happen; (2) Exim can process the queue one subdirectory at a time instead of
+# all at once, which can give better performance with large queues.
+
+# split_spool_directory = true
+
+
+# If you're in a part of the world where ASCII is not sufficient for most
+# text, then you're probably familiar with RFC2047 message header extensions.
+# By default, Exim adheres to the specification, including a limit of 76
+# characters to a line, with encoded words fitting within a line.
+# If you wish to use decoded headers in message filters in such a way
+# that successful decoding of malformed messages matters, you may wish to
+# configure Exim to be more lenient.
+#
+# check_rfc2047_length = false
+#
+# In particular, the Exim maintainers have had multiple reports of problems
+# from Russian administrators of issues until they disable this check,
+# because of some popular, yet buggy, mail composition software.
+
+
+# If you wish to be strictly RFC compliant, or if you know you'll be
+# exchanging email with systems that are not 8-bit clean, then you may
+# wish to disable advertising 8BITMIME.  Uncomment this option to do so.
+
+# accept_8bitmime = false
+
+
+# Exim does not make use of environment variables itself. However,
+# libraries that Exim uses (e.g. LDAP) depend on specific environment settings.
+# There are two lists: keep_environment for the variables we trust, and
+# add_environment for variables we want to set to a specific value.
+# Note that TZ is handled separateley by the timezone runtime option
+# and TIMEZONE_DEFAULT buildtime option.
+
+# keep_environment = ^LDAP
+# add_environment = PATH=/usr/bin::/bin
+
+
+
+######################################################################
+#                       ACL CONFIGURATION                            #
+#         Specifies access control lists for incoming SMTP mail      #
+######################################################################
+
+begin acl
+
+# This access control list is used for every RCPT command in an incoming
+# SMTP message. The tests are run in order until the address is either
+# accepted or denied.
+
+acl_check_rcpt:
+
+  # Accept if the source is local SMTP (i.e. not over TCP/IP). We do this by
+  # testing for an empty sending host field.
+
+  accept  hosts = :
+          control = dkim_disable_verify
+
+  #############################################################################
+  # The following section of the ACL is concerned with local parts that contain
+  # @ or % or ! or / or | or dots in unusual places.
+  #
+  # The characters other than dots are rarely found in genuine local parts, but
+  # are often tried by people looking to circumvent relaying restrictions.
+  # Therefore, although they are valid in local parts, these rules lock them
+  # out, as a precaution.
+  #
+  # Empty components (two dots in a row) are not valid in RFC 2822, but Exim
+  # allows them because they have been encountered. (Consider local parts
+  # constructed as "firstinitial.secondinitial.familyname" when applied to
+  # someone like me, who has no second initial.) However, a local part starting
+  # with a dot or containing /../ can cause trouble if it is used as part of a
+  # file name (e.g. for a mailing list). This is also true for local parts that
+  # contain slashes. A pipe symbol can also be troublesome if the local part is
+  # incorporated unthinkingly into a shell command line.
+  #
+  # Two different rules are used. The first one is stricter, and is applied to
+  # messages that are addressed to one of the local domains handled by this
+  # host. The line "domains = +local_domains" restricts it to domains that are
+  # defined by the "domainlist local_domains" setting above. The rule  blocks
+  # local parts that begin with a dot or contain @ % ! / or |. If you have
+  # local accounts that include these characters, you will have to modify this
+  # rule.
+
+  deny    message       = Restricted characters in address
+          domains       = +local_domains
+          local_parts   = ^[.] : ^.*[@%!/|]
+
+  # The second rule applies to all other domains, and is less strict. The line
+  # "domains = !+local_domains" restricts it to domains that are NOT defined by
+  # the "domainlist local_domains" setting above. The exclamation mark is a
+  # negating operator. This rule allows your own users to send outgoing
+  # messages to sites that use slashes and vertical bars in their local parts.
+  # It blocks local parts that begin with a dot, slash, or vertical bar, but
+  # allows these characters within the local part. However, the sequence /../
+  # is barred. The use of @ % and ! is blocked, as before. The motivation here
+  # is to prevent your users (or your users' viruses) from mounting certain
+  # kinds of attack on remote sites.
+
+  deny    message       = Restricted characters in address
+          domains       = !+local_domains
+          local_parts   = ^[./|] : ^.*[@%!] : ^.*/\\.\\./
+  #############################################################################
+
+  # Accept mail to postmaster in any local domain, regardless of the source,
+  # and without verifying the sender.
+
+  accept  local_parts   = postmaster
+          domains       = +local_domains
+
+  # Deny unless the sender address can be verified.
+
+  require verify        = sender
+
+  # Accept if the message comes from one of the hosts for which we are an
+  # outgoing relay. It is assumed that such hosts are most likely to be MUAs,
+  # so we set control=submission to make Exim treat the message as a
+  # submission. It will fix up various errors in the message, for example, the
+  # lack of a Date: header line. If you are actually relaying out out from
+  # MTAs, you may want to disable this. If you are handling both relaying from
+  # MTAs and submissions from MUAs you should probably split them into two
+  # lists, and handle them differently.
+
+  # Recipient verification is omitted here, because in many cases the clients
+  # are dumb MUAs that don't cope well with SMTP error responses. If you are
+  # actually relaying out from MTAs, you should probably add recipient
+  # verification here.
+
+  # Note that, by putting this test before any DNS black list checks, you will
+  # always accept from these hosts, even if they end up on a black list. The
+  # assumption is that they are your friends, and if they get onto a black
+  # list, it is a mistake.
+
+  accept  hosts         = +relay_from_hosts
+          control       = submission
+          control       = dkim_disable_verify
+
+  # Accept if the message arrived over an authenticated connection, from
+  # any host. Again, these messages are usually from MUAs, so recipient
+  # verification is omitted, and submission mode is set. And again, we do this
+  # check before any black list tests.
+
+  accept  authenticated = *
+          control       = submission
+          control       = dkim_disable_verify
+
+  # Insist that a HELO/EHLO was accepted.
+
+  require message	= nice hosts say HELO first
+          condition	= ${if def:sender_helo_name}
+
+  # Insist that any other recipient address that we accept is either in one of
+  # our local domains, or is in a domain for which we explicitly allow
+  # relaying. Any other domain is rejected as being unacceptable for relaying.
+
+  require message = relay not permitted
+          domains = +local_domains : +relay_to_domains
+
+  # We also require all accepted addresses to be verifiable. This check will
+  # do local part verification for local domains, but only check the domain
+  # for remote domains. The only way to check local parts for the remote
+  # relay domains is to use a callout (add /callout), but please read the
+  # documentation about callouts before doing this.
+
+  require verify = recipient
+
+  #############################################################################
+  # There are no default checks on DNS black lists because the domains that
+  # contain these lists are changing all the time. However, here are two
+  # examples of how you can get Exim to perform a DNS black list lookup at this
+  # point. The first one denies, whereas the second just warns.
+  #
+  # deny    message       = rejected because $sender_host_address is in a black list at $dnslist_domain\n$dnslist_text
+  #         dnslists      = black.list.example
+  #
+  # warn    dnslists      = black.list.example
+  #         add_header    = X-Warning: $sender_host_address is in a black list at $dnslist_domain
+  #         log_message   = found in $dnslist_domain
+  #############################################################################
+
+  #############################################################################
+  # This check is commented out because it is recognized that not every
+  # sysadmin will want to do it. If you enable it, the check performs
+  # Client SMTP Authorization (csa) checks on the sending host. These checks
+  # do DNS lookups for SRV records. The CSA proposal is currently (May 2005)
+  # an Internet draft. You can, of course, add additional conditions to this
+  # ACL statement to restrict the CSA checks to certain hosts only.
+  #
+  # require verify = csa
+  #############################################################################
+
+  # At this point, the address has passed all the checks that have been
+  # configured, so we accept it unconditionally.
+
+  accept
+
+
+# This ACL is used after the contents of a message have been received. This
+# is the ACL in which you can test a message's headers or body, and in
+# particular, this is where you can invoke external virus or spam scanners.
+# Some suggested ways of configuring these tests are shown below, commented
+# out. Without any tests, this ACL accepts all messages. If you want to use
+# such tests, you must ensure that Exim is compiled with the content-scanning
+# extension (WITH_CONTENT_SCAN=yes in Local/Makefile).
+
+acl_check_data:
+
+  # Deny if the message contains an overlong line.  Per the standards
+  # we should never receive one such via SMTP.
+  #
+  deny    condition  = ${if > {$max_received_linelength}{998}}
+
+  # Deny if the message contains a virus. Before enabling this check, you
+  # must install a virus scanner and set the av_scanner option above.
+  #
+  # deny    malware    = *
+  #         message    = This message contains a virus ($malware_name).
+
+  # Add headers to a message if it is judged to be spam. Before enabling this,
+  # you must install SpamAssassin. You may also need to set the spamd_address
+  # option above.
+  #
+  # warn    spam       = nobody
+  #         add_header = X-Spam_score: $spam_score\n\
+  #                      X-Spam_score_int: $spam_score_int\n\
+  #                      X-Spam_bar: $spam_bar\n\
+  #                      X-Spam_report: $spam_report
+
+  # Accept the message.
+
+  accept
+
+
+
+######################################################################
+#                      ROUTERS CONFIGURATION                         #
+#               Specifies how addresses are handled                  #
+######################################################################
+#     THE ORDER IN WHICH THE ROUTERS ARE DEFINED IS IMPORTANT!       #
+# An address is passed to each router in turn until it is accepted.  #
+######################################################################
+
+begin routers
+
+# This router routes to remote hosts over SMTP by explicit IP address,
+# when an email address is given in "domain literal" form, for example,
+# <user@[192.168.35.64]>. The RFCs require this facility. However, it is
+# little-known these days, and has been exploited by evil people seeking
+# to abuse SMTP relays. Consequently it is commented out in the default
+# configuration. If you uncomment this router, you also need to uncomment
+# allow_domain_literals above, so that Exim can recognize the syntax of
+# domain literal addresses.
+
+# domain_literal:
+#   driver = ipliteral
+#   domains = ! +local_domains
+#   transport = remote_smtp
+
+
+# This router routes addresses that are not in local domains by doing a DNS
+# lookup on the domain name. The exclamation mark that appears in "domains = !
+# +local_domains" is a negating operator, that is, it can be read as "not". The
+# recipient's domain must not be one of those defined by "domainlist
+# local_domains" above for this router to be used.
+#
+# If the router is used, any domain that resolves to 0.0.0.0 or to a loopback
+# interface address (127.0.0.0/8) is treated as if it had no DNS entry. Note
+# that 0.0.0.0 is the same as 0.0.0.0/32, which is commonly treated as the
+# local host inside the network stack. It is not 0.0.0.0/0, the default route.
+# If the DNS lookup fails, no further routers are tried because of the no_more
+# setting, and consequently the address is unrouteable.
+
+dnslookup:
+  driver = dnslookup
+  domains = ! +local_domains
+  transport = remote_smtp
+  ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8
+# if ipv6-enabled then instead use:
+# ignore_target_hosts = <; 0.0.0.0 ; 127.0.0.0/8 ; ::1
+  no_more
+
+
+# This alternative router can be used when you want to send all mail to a
+# server which handles DNS lookups for you; an ISP will typically run such
+# a server for their customers.  If you uncomment "smarthost" then you
+# should comment out "dnslookup" above.  Setting a real hostname in route_data
+# wouldn't hurt either.
+
+# smarthost:
+#   driver = manualroute
+#   domains = ! +local_domains
+#   transport = remote_smtp
+#   route_data = MAIL.HOSTNAME.FOR.CENTRAL.SERVER.EXAMPLE
+#   ignore_target_hosts = <; 0.0.0.0 ; 127.0.0.0/8 ; ::1
+#   no_more
+
+
+# The remaining routers handle addresses in the local domain(s), that is those
+# domains that are defined by "domainlist local_domains" above.
+
+
+# This router handles aliasing using a linearly searched alias file with the
+# name /etc/exim/aliases. When this configuration is installed automatically,
+# the name gets inserted into this file from whatever is set in Exim's
+# build-time configuration. The default path is the traditional /etc/aliases.
+# If you install this configuration by hand, you need to specify the correct
+# path in the "data" setting below.
+#
+##### NB  You must ensure that the alias file exists. It used to be the case
+##### NB  that every Unix had that file, because it was the Sendmail default.
+##### NB  These days, there are systems that don't have it. Your aliases
+##### NB  file should at least contain an alias for "postmaster".
+#
+# If any of your aliases expand to pipes or files, you will need to set
+# up a user and a group for these deliveries to run under. You can do
+# this by uncommenting the "user" option below (changing the user name
+# as appropriate) and adding a "group" option if necessary. Alternatively, you
+# can specify "user" on the transports that are used. Note that the transports
+# listed below are the same as are used for .forward files; you might want
+# to set up different ones for pipe and file deliveries from aliases.
+
+system_aliases:
+  driver = redirect
+  allow_fail
+  allow_defer
+  data = ${lookup{$local_part}lsearch{/etc/exim/aliases}}
+# user = exim
+  file_transport = address_file
+  pipe_transport = address_pipe
+
+
+# This router handles forwarding using traditional .forward files in users'
+# home directories. If you want it also to allow mail filtering when a forward
+# file starts with the string "# Exim filter" or "# Sieve filter", uncomment
+# the "allow_filter" option.
+
+# The no_verify setting means that this router is skipped when Exim is
+# verifying addresses. Similarly, no_expn means that this router is skipped if
+# Exim is processing an EXPN command.
+
+# If you want this router to treat local parts with suffixes introduced by "-"
+# or "+" characters as if the suffixes did not exist, uncomment the two local_
+# part_suffix options. Then, for example, xxxx-foo@your.domain will be treated
+# in the same way as xxxx@your.domain by this router. Because this router is
+# not used for verification, if you choose to uncomment those options, then you
+# will *need* to make the same change to the localuser router.  (There are
+# other approaches, if this is undesirable, but they add complexity).
+
+# The check_ancestor option means that if the forward file generates an
+# address that is an ancestor of the current one, the current one gets
+# passed on instead. This covers the case where A is aliased to B and B
+# has a .forward file pointing to A.
+
+# The three transports specified at the end are those that are used when
+# forwarding generates a direct delivery to a file, or to a pipe, or sets
+# up an auto-reply, respectively.
+
+userforward:
+  driver = redirect
+  check_local_user
+# local_part_suffix = +* : -*
+# local_part_suffix_optional
+  file = $home/.forward
+# allow_filter
+  no_verify
+  no_expn
+  check_ancestor
+  file_transport = address_file
+  pipe_transport = address_pipe
+  reply_transport = address_reply
+
+
+# This router matches local user mailboxes. If the router fails, the error
+# message is "Unknown user".
+
+# If you want this router to treat local parts with suffixes introduced by "-"
+# or "+" characters as if the suffixes did not exist, uncomment the two local_
+# part_suffix options. Then, for example, xxxx-foo@your.domain will be treated
+# in the same way as xxxx@your.domain by this router.
+
+localuser:
+  driver = accept
+  check_local_user
+# local_part_suffix = +* : -*
+# local_part_suffix_optional
+  transport = local_delivery
+  cannot_route_message = Unknown user
+
+
+
+######################################################################
+#                      TRANSPORTS CONFIGURATION                      #
+######################################################################
+#                       ORDER DOES NOT MATTER                        #
+#     Only one appropriate transport is called for each delivery.    #
+######################################################################
+
+# A transport is used only when referenced from a router that successfully
+# handles an address.
+
+begin transports
+
+
+# This transport is used for delivering messages over SMTP connections.
+# Refuse to send any message with over-long lines, which could have
+# been received other than via SMTP. The use of message_size_limit to
+# enforce this is a red herring.
+
+remote_smtp:
+  driver = smtp
+  message_size_limit = ${if > {$max_received_linelength}{998} {1}{0}}
+
+
+# This transport is used for local delivery to user mailboxes in traditional
+# BSD mailbox format. By default it will be run under the uid and gid of the
+# local user, and requires the sticky bit to be set on the /var/mail directory.
+# Some systems use the alternative approach of running mail deliveries under a
+# particular group instead of using the sticky bit. The commented options below
+# show how this can be done.
+
+local_delivery:
+  driver = appendfile
+  file = /var/mail/$local_part
+  delivery_date_add
+  envelope_to_add
+  return_path_add
+# group = mail
+# mode = 0660
+
+
+# This transport is used for handling pipe deliveries generated by alias or
+# .forward files. If the pipe generates any standard output, it is returned
+# to the sender of the message as a delivery error. Set return_fail_output
+# instead of return_output if you want this to happen only when the pipe fails
+# to complete normally. You can set different transports for aliases and
+# forwards if you want to - see the references to address_pipe in the routers
+# section above.
+
+address_pipe:
+  driver = pipe
+  return_output
+
+
+# This transport is used for handling deliveries directly to files that are
+# generated by aliasing or forwarding.
+
+address_file:
+  driver = appendfile
+  delivery_date_add
+  envelope_to_add
+  return_path_add
+
+
+# This transport is used for handling autoreplies generated by the filtering
+# option of the userforward router.
+
+address_reply:
+  driver = autoreply
+
+
+
+######################################################################
+#                      RETRY CONFIGURATION                           #
+######################################################################
+
+begin retry
+
+# This single retry rule applies to all domains and all errors. It specifies
+# retries every 15 minutes for 2 hours, then increasing retry intervals,
+# starting at 1 hour and increasing each time by a factor of 1.5, up to 16
+# hours, then retries every 6 hours until 4 days have passed since the first
+# failed delivery.
+
+# WARNING: If you do not have any retry rules at all (this section of the
+# configuration is non-existent or empty), Exim will not do any retries of
+# messages that fail to get delivered at the first attempt. The effect will
+# be to treat temporary errors as permanent. Therefore, DO NOT remove this
+# retry rule unless you really don't want any retries.
+
+# Address or Domain    Error       Retries
+# -----------------    -----       -------
+
+*                      *           F,2h,15m; G,16h,1h,1.5; F,4d,6h
+
+
+
+######################################################################
+#                      REWRITE CONFIGURATION                         #
+######################################################################
+
+# There are no rewriting specifications in this default configuration file.
+
+begin rewrite
+
+
+
+######################################################################
+#                   AUTHENTICATION CONFIGURATION                     #
+######################################################################
+
+# The following authenticators support plaintext username/password
+# authentication using the standard PLAIN mechanism and the traditional
+# but non-standard LOGIN mechanism, with Exim acting as the server.
+# PLAIN and LOGIN are enough to support most MUA software.
+#
+# These authenticators are not complete: you need to change the
+# server_condition settings to specify how passwords are verified.
+# They are set up to offer authentication to the client only if the
+# connection is encrypted with TLS, so you also need to add support
+# for TLS. See the global configuration options section at the start
+# of this file for more about TLS.
+#
+# The default RCPT ACL checks for successful authentication, and will accept
+# messages from authenticated users from anywhere on the Internet.
+
+begin authenticators
+
+# PLAIN authentication has no server prompts. The client sends its
+# credentials in one lump, containing an authorization ID (which we do not
+# use), an authentication ID, and a password. The latter two appear as
+# $auth2 and $auth3 in the configuration and should be checked against a
+# valid username and password. In a real configuration you would typically
+# use $auth2 as a lookup key, and compare $auth3 against the result of the
+# lookup, perhaps using the crypteq{}{} condition.
+
+#PLAIN:
+#  driver                     = plaintext
+#  server_set_id              = $auth2
+#  server_prompts             = :
+#  server_condition           = Authentication is not yet configured
+#  server_advertise_condition = ${if def:tls_in_cipher }
+
+# LOGIN authentication has traditional prompts and responses. There is no
+# authorization ID in this mechanism, so unlike PLAIN the username and
+# password are $auth1 and $auth2. Apart from that you can use the same
+# server_condition setting for both authenticators.
+
+#LOGIN:
+#  driver                     = plaintext
+#  server_set_id              = $auth1
+#  server_prompts             = <| Username: | Password:
+#  server_condition           = Authentication is not yet configured
+#  server_advertise_condition = ${if def:tls_in_cipher }
+
+
+######################################################################
+#                   CONFIGURATION FOR local_scan()                   #
+######################################################################
+
+# If you have built Exim to include a local_scan() function that contains
+# tables for private options, you can define those options here. Remember to
+# uncomment the "begin" line. It is commented by default because it provokes
+# an error with Exim binaries that are not built with LOCAL_SCAN_HAS_OPTIONS
+# set in the Local/Makefile.
+
+# begin local_scan
+
+
+# End of Exim configuration file
diff --git a/core/conf/skel/.bashrc b/core/conf/skel/.bashrc
index 38f4b24..9a7498e 100644
--- a/core/conf/skel/.bashrc
+++ b/core/conf/skel/.bashrc
@@ -21,7 +21,6 @@ shopt -s histappend
 HISTSIZE=1000
 HISTFILESIZE=2000
 
-alias tmux="tmux -2"
 
 alias rm='rm -i'
 #alias cp='cp -i'
@@ -46,12 +45,14 @@ glog () {
     git log --graph --abbrev-commit --decorate --date=relative --all
 }
 
-if [[ -z "$TMUX" ]] ;then
-    ID="`tmux ls | grep -vm1 attached | cut -d: -f1`" # get the id of a deattached session
-    if [[ -z "$ID" ]] ;then # if not available create a new one
-        tmux new-session
-    else
-        tmux attach-session -t "$ID" # if available attach to it
-    fi
-fi
 
+#alias tmux="tmux -2"
+#if [[ -z "$TMUX" ]] ;then
+#    ID="`tmux ls | grep -vm1 attached | cut -d: -f1`" # get the id of a deattached session
+#    if [[ -z "$ID" ]] ;then # if not available create a new one
+#        tmux new-session
+#    else
+#        tmux attach-session -t "$ID" # if available attach to it
+#    fi
+#fi
+#
diff --git a/core/conf/skel/.gnupg/gpg.conf b/core/conf/skel/.gnupg/gpg.conf
deleted file mode 100644
index 20eed65..0000000
--- a/core/conf/skel/.gnupg/gpg.conf
+++ /dev/null
@@ -1,141 +0,0 @@
-# These first three lines are not copied to the gpg.conf file in
-# the users home directory.
-# $Id$
-# Options for GnuPG
-# Copyright 1998-2003, 2010 Free Software Foundation, Inc.
-# Copyright 1998-2003, 2010 Werner Koch
-#
-# This file is free software; as a special exception the author gives
-# unlimited permission to copy and/or distribute it, with or without
-# modifications, as long as this notice is preserved.
-#
-# This file is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
-# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-#
-# Unless you specify which option file to use (with the command line
-# option "--options filename"), GnuPG uses the file ~/.gnupg/gpg.conf
-# by default.
-#
-# An options file can contain any long options which are available in
-# GnuPG. If the first non white space character of a line is a '#',
-# this line is ignored.  Empty lines are also ignored.
-#
-# See the gpg man page for a list of options.
-
-
-# If you have more than 1 secret key in your keyring, you may want to
-# uncomment the following option and set your preferred keyid.
-
-#default-key 621CC013
-
-
-# If you do not pass a recipient to gpg, it will ask for one.  Using
-# this option you can encrypt to a default key.  Key validation will
-# not be done in this case.  The second form uses the default key as
-# default recipient.
-
-#default-recipient some-user-id
-#default-recipient-self
-
-
-# Group names may be defined like this:
-#   group mynames = paige 0x12345678 joe patti
-#
-# Any time "mynames" is a recipient (-r or --recipient), it will be
-# expanded to the names "paige", "joe", and "patti", and the key ID
-# "0x12345678".  Note there is only one level of expansion - you
-# cannot make an group that points to another group.  Note also that
-# if there are spaces in the recipient name, this will appear as two
-# recipients.  In these cases it is better to use the key ID.
-
-#group mynames = paige 0x12345678 joe patti
-
-
-# GnuPG can automatically locate and retrieve keys as needed using
-# this option.  This happens when encrypting to an email address (in
-# the "user@@example.com" form) and there are no keys matching
-# "user@example.com" in the local keyring.  This option takes any
-# number mechanisms which are tried in the given order.  The default
-# is "--auto-key-locate local" to search for keys only in the local
-# key database.  Uncomment the next line to locate a missing key using
-# two DNS based mechanisms.
-
-#auto-key-locate local,pka,dane
-
-
-# Common options for keyserver functions:
-# (Note that the --keyserver option has been moved to dirmngr.conf)
-#
-# include-disabled = when searching, include keys marked as "disabled"
-#                    on the keyserver (not all keyservers support this).
-#
-# no-include-revoked = when searching, do not include keys marked as
-#                      "revoked" on the keyserver.
-#
-# verbose = show more information as the keys are fetched.
-#           Can be used more than once to increase the amount
-#           of information shown.
-#
-# auto-key-retrieve = automatically fetch keys as needed from the keyserver
-#                     when verifying signatures or when importing keys that
-#                     have been revoked by a revocation key that is not
-#                     present on the keyring.
-#
-# no-include-attributes = do not include attribute IDs (aka "photo IDs")
-#                         when sending keys to the keyserver.
-
-keyserver-options auto-key-retrieve
-#keyserver wwwkeys.pgp.net
-#keyserver search.keyserver.net
-keyserver pgp.mit.edu
-
-# Uncomment this line to display photo user IDs in key listings and
-# when a signature from a key with a photo is verified.
-
-#show-photos
-
-
-# Use this program to display photo user IDs
-#
-# %i is expanded to a temporary file that contains the photo.
-# %I is the same as %i, but the file isn't deleted afterwards by GnuPG.
-# %k is expanded to the key ID of the key.
-# %K is expanded to the long OpenPGP key ID of the key.
-# %t is expanded to the extension of the image (e.g. "jpg").
-# %T is expanded to the MIME type of the image (e.g. "image/jpeg").
-# %f is expanded to the fingerprint of the key.
-# %% is %, of course.
-#
-# If %i or %I are not present, then the photo is supplied to the
-# viewer on standard input.  If your platform supports it, standard
-# input is the best way to do this as it avoids the time and effort in
-# generating and then cleaning up a secure temp file.
-#
-# The default program is "xloadimage -fork -quiet -title 'KeyID 0x%k' stdin"
-# On Mac OS X and Windows, the default is to use your regular JPEG image
-# viewer.
-#
-# Some other viewers:
-# photo-viewer "qiv %i"
-# photo-viewer "ee %i"
-# photo-viewer "display -title 'KeyID 0x%k'"
-#
-# This one saves a copy of the photo ID in your home directory:
-# photo-viewer "cat > ~/photoid-for-key-%k.%t"
-#
-# Use your MIME handler to view photos:
-# photo-viewer "metamail -q -d -b -c %T -s 'KeyID 0x%k' -f GnuPG"
-
-
-# Because some mailers change lines starting with "From " to ">From "
-# it is good to handle such lines in a special way when creating
-# cleartext signatures; all other PGP versions do it this way too.
-# To enable full OpenPGP compliance you may want to use this option.
-
-#no-escape-from-lines
-
-
-# Uncomment the following option to get rid of the copyright notice
-
-#no-greeting
diff --git a/core/conf/skel/.mutt/external b/core/conf/skel/.mutt/external
deleted file mode 100644
index 8ade1b1..0000000
--- a/core/conf/skel/.mutt/external
+++ /dev/null
@@ -1,27 +0,0 @@
-color status blue default
-
-unset sendmail
-
-set folder="~/.mailext"
-set mbox_type=Maildir
-set spoolfile="~/.mailext"
-set keep_flagged=yes            # esc-f to mark messages in spool, and
-
-set mbox="~/.mailext"
-set postponed="+.Drafts"
-set record="+.Sent"
-
-set use_from=yes
-set ssl_starttls=yes
-set ssl_force_tls = yes
-
-set realname='User Name'
-set from=mail@external.org
-
-set pop_user="mail@external.org"
-set pop_pass="password"
-set pop_delete=yes
-set pop_host="pops://$pop_user:$pop_pass@pop.external.org:995"
-
-set smtp_url="smtps://$pop_user:$pop_pass@smtp.external.org/"
-
diff --git a/core/conf/skel/.mutt/gpg.rc b/core/conf/skel/.mutt/gpg.rc
deleted file mode 100644
index 2ef0ae2..0000000
--- a/core/conf/skel/.mutt/gpg.rc
+++ /dev/null
@@ -1,88 +0,0 @@
-# -*-muttrc-*-
-#
-# Command formats for gpg.
-# 
-# This version uses gpg-2comp from 
-#   http://70t.de/download/gpg-2comp.tar.gz
-#
-# $Id$
-#
-# %p    The empty string when no passphrase is needed,
-#       the string "PGPPASSFD=0" if one is needed.
-#
-#       This is mostly used in conditional % sequences.
-#
-# %f    Most PGP commands operate on a single file or a file
-#       containing a message.  %f expands to this file's name.
-#
-# %s    When verifying signatures, there is another temporary file
-#       containing the detached signature.  %s expands to this
-#       file's name.
-#
-# %a    In "signing" contexts, this expands to the value of the
-#       configuration variable $pgp_sign_as.  You probably need to
-#       use this within a conditional % sequence.
-#
-# %r    In many contexts, mutt passes key IDs to pgp.  %r expands to
-#       a list of key IDs.
-
-# Note that we explicitly set the comment armor header since GnuPG, when used
-# in some localiaztion environments, generates 8bit data in that header, thereby
-# breaking PGP/MIME.
-
-# decode application/pgp
-set pgp_decode_command="gpg --status-fd=2 %?p?--passphrase-fd 0? --no-verbose --quiet --batch --output - %f"
-
-# verify a pgp/mime signature
-set pgp_verify_command="gpg --status-fd=2 --no-verbose --quiet --batch --output - --verify %s %f"
-
-# decrypt a pgp/mime attachment
-set pgp_decrypt_command="gpg --status-fd=2 %?p?--passphrase-fd 0? --no-verbose --quiet --batch --output - %f"
-
-# create a pgp/mime signed attachment
-# set pgp_sign_command="gpg-2comp --comment '' --no-verbose --batch --output - %?p?--passphrase-fd 0? --armor --detach-sign --textmode %?a?-u %a? %f"
-set pgp_sign_command="gpg --no-verbose --batch --quiet --output - %?p?--passphrase-fd 0? --armor --detach-sign --textmode %?a?-u %a? %f"
-
-# create a application/pgp signed (old-style) message
-# set pgp_clearsign_command="gpg-2comp --comment '' --no-verbose --batch --output - %?p?--passphrase-fd 0? --armor --textmode --clearsign %?a?-u %a? %f"
-set pgp_clearsign_command="gpg --no-verbose --batch --quiet --output - %?p?--passphrase-fd 0? --armor --textmode --clearsign %?a?-u %a? %f"
-
-# create a pgp/mime encrypted attachment
-# set pgp_encrypt_only_command="pgpewrap gpg-2comp -v --batch --output - --encrypt --textmode --armor --always-trust -- -r %r -- %f"
-set pgp_encrypt_only_command="pgpewrap gpg --batch --quiet --no-verbose --output - --encrypt --textmode --armor --always-trust -- -r %r -- %f"
-
-# create a pgp/mime encrypted and signed attachment
-# set pgp_encrypt_sign_command="pgpewrap gpg-2comp %?p?--passphrase-fd 0? -v --batch --output - --encrypt --sign %?a?-u %a? --armor --always-trust -- -r %r -- %f"
-set pgp_encrypt_sign_command="pgpewrap gpg %?p?--passphrase-fd 0? --batch --quiet --no-verbose --textmode --output - --encrypt --sign %?a?-u %a? --armor --always-trust -- -r %r -- %f"
-
-# import a key into the public key ring
-set pgp_import_command="gpg --no-verbose --import %f"
-
-# export a key from the public key ring
-set pgp_export_command="gpg --no-verbose --export --armor %r"
-
-# verify a key
-set pgp_verify_key_command="gpg --verbose --batch --fingerprint --check-sigs %r"
-
-# read in the public key ring
-set pgp_list_pubring_command="gpg --no-verbose --batch --quiet --with-colons --with-fingerprint --with-fingerprint --list-keys %r"
-
-# read in the secret key ring
-set pgp_list_secring_command="gpg --no-verbose --batch --quiet --with-colons --with-fingerprint --with-fingerprint --list-secret-keys %r"
-
-# fetch keys
-# set pgp_getkeys_command="pkspxycwrap %r"
-
-# pattern for good signature - may need to be adapted to locale!
-
-# set pgp_good_sign="^gpgv?: Good signature from "
-
-# OK, here's a version which uses gnupg's message catalog:
-# set pgp_good_sign="`gettext -d gnupg -s 'Good signature from "' | tr -d '"'`"
-
-# This version uses --status-fd messages
-set pgp_good_sign="^\\[GNUPG:\\] GOODSIG"
-
-# pattern to verify a decryption occurred
-set pgp_decryption_okay="^\\[GNUPG:\\] DECRYPTION_OKAY"
-
diff --git a/core/conf/skel/.mutt/mail_alias b/core/conf/skel/.mutt/mail_alias
deleted file mode 100644
index e69de29..0000000
--- a/core/conf/skel/.mutt/mail_alias
+++ /dev/null
diff --git a/core/conf/skel/.mutt/muttrc b/core/conf/skel/.mutt/muttrc
deleted file mode 100644
index a56757e..0000000
--- a/core/conf/skel/.mutt/muttrc
+++ /dev/null
@@ -1,65 +0,0 @@
-set config_charset="utf-8"
-# set locale="de_CH"
-set charset="utf-8"
-set send_charset="utf-8"
-set editor="vim"
-set visual=vim
-set auto_tag
-set sort=threads
-
-set sort_browser=reverse-date
-set sort_aux=reverse-last-date-received
-set duplicate_threads=yes
-
-source ~/.mutt/gpg.rc
-
-set pgp_autosign=yes
-set pgp_sign_as=0x1D327CA1
-set pgp_replyencrypt=yes
-set pgp_timeout=1800
-
-# automatically sign all outgoing messages
-set crypt_autosign
-
-# sign only replies to signed messages
-set crypt_replysign
-
-# automatically encrypt outgoing messages
-#set crypt_autoencrypt=yes
-
-# encrypt only replies to signed messages
-set crypt_replyencrypt=yes
-
-# encrypt and sign replies to encrypted messages
-set crypt_replysignencrypted=yes
-
-# automatically verify the sign of a message when opened
-set crypt_verify_sig=yes
-
-source "~/.mutt/mail_alias"
-set alias_file=~/.mutt/mail_alias
-
-# Header
-set header_cache =~/.mutt/cache/headers
-set message_cachedir =~/.mutt/cache/bodies
-set certificate_file =~/.mutt/certificates
-
-set timeout=10    # mutt 'presses' (like) a key for you 
-                  #(while you're idle) each x sec to trigger 
-                  #the thing below
-set mail_check=5  # mutt checks for new mails on every keystroke
-                  # but not more often then once in 5 seconds
-set beep_new      # beep on new messages in the mailboxes
-
-## Local system account
-folder-hook 'Mail' 'source ~/.mutt/system'
-
-## Remote account
-folder-hook 'MailExt' 'source ~/.mutt/external'
-
-## Default account
-source "~/.mutt/system"
-
-## Shortcuts
-macro index,pager <f2> '<sync-mailbox><enter-command>source ~/.mutt/system<enter><change-folder>!<enter>'
-macro index,pager <f3> '<sync-mailbox><enter-command>source ~/.mutt/external<enter><change-folder>!<enter>'
diff --git a/core/conf/skel/.mutt/system b/core/conf/skel/.mutt/system
deleted file mode 100644
index ae23778..0000000
--- a/core/conf/skel/.mutt/system
+++ /dev/null
@@ -1,25 +0,0 @@
-color status green default
-
-set folder="~/.mail"
-set mbox_type=Maildir
-set spoolfile=/var/spool/mail/username
-set keep_flagged=yes
-
-set mbox="~/.mail"           # ~/.mailext/read_inbox
-set postponed="+.Drafts"
-set record="+.Sent"
-
-set use_from=yes
-
-set sendmail=/usr/sbin/exim
-set ssl_starttls=no
-set ssl_force_tls=no
-
-unset pop_user
-unset pop_pass
-unset pop_delete
-unset pop_host
-unset smtp_url
-
-set realname='username'
-set from=username@localhost
diff --git a/core/conf/skel/.profile b/core/conf/skel/.profile
index 58f821e..71dd6f8 100644
--- a/core/conf/skel/.profile
+++ b/core/conf/skel/.profile
@@ -1,6 +1,6 @@
 export GPG_AGENT_INFO  # the env file does not contain the export statement
 export SSH_AUTH_SOCK   # enable gpg-agent for ssh
 
-export GPGKEY=EE29B7D3
+export GPGKEY=8BF422F7
 
-alias prodtmux="ssh prod -t tmux a"
+#alias prodtmux="ssh srv-remote -t tmux a"
diff --git a/core/conf/skel/.tmux.conf b/core/conf/skel/.tmux.conf
index 795aff6..a68ccb2 100644
--- a/core/conf/skel/.tmux.conf
+++ b/core/conf/skel/.tmux.conf
@@ -23,3 +23,5 @@ set -g bell-action any
 bind-key j command-prompt -p "join pane from:"  "join-pane -s '%%'"
 bind-key s command-prompt -p "send pane to:"  "join-pane -t '%%'"
 
+# Torn on mouse
+set -g mouse on
diff --git a/core/conf/skel/.vim/backup/.gitignore b/core/conf/skel/.vim/backup/.gitignore
deleted file mode 100644
index e69de29..0000000
--- a/core/conf/skel/.vim/backup/.gitignore
+++ /dev/null
diff --git a/core/conf/skel/.vim/colors/wombat256mod.vim b/core/conf/skel/.vim/colors/wombat256mod.vim
deleted file mode 100644
index 1137eb8..0000000
--- a/core/conf/skel/.vim/colors/wombat256mod.vim
+++ /dev/null
@@ -1,96 +0,0 @@
-" Vim color file
-" Original Maintainer:  Lars H. Nielsen (dengmao@gmail.com)
-" Last Change:  2010-07-23
-"
-" Modified version of wombat for 256-color terminals by
-"   David Liang (bmdavll@gmail.com)
-" based on version by
-"   Danila Bespalov (danila.bespalov@gmail.com)
-
-set background=dark
-
-if version > 580
-	hi clear
-	if exists("syntax_on")
-		syntax reset
-	endif
-endif
-
-let colors_name = "wombat256mod"
-
-
-" General colors
-hi Normal		ctermfg=252		ctermbg=234		cterm=none		guifg=#e3e0d7	guibg=#242424	gui=none
-hi Cursor		ctermfg=234		ctermbg=228		cterm=none		guifg=#242424	guibg=#eae788	gui=none
-hi Visual		ctermfg=251		ctermbg=239		cterm=none		guifg=#c3c6ca	guibg=#554d4b	gui=none
-hi VisualNOS	ctermfg=251		ctermbg=236		cterm=none		guifg=#c3c6ca	guibg=#303030	gui=none
-hi Search		ctermfg=177		ctermbg=241		cterm=none		guifg=#d787ff	guibg=#636066	gui=none
-hi Folded		ctermfg=103		ctermbg=237		cterm=none		guifg=#a0a8b0	guibg=#3a4046	gui=none
-hi Title		ctermfg=230						cterm=bold		guifg=#ffffd7					gui=bold
-hi StatusLine	ctermfg=230		ctermbg=238		cterm=none		guifg=#ffffd7	guibg=#444444	gui=italic
-hi VertSplit	ctermfg=238		ctermbg=238		cterm=none		guifg=#444444	guibg=#444444	gui=none
-hi StatusLineNC	ctermfg=241		ctermbg=238		cterm=none		guifg=#857b6f	guibg=#444444	gui=none
-hi LineNr		ctermfg=241		ctermbg=232		cterm=none		guifg=#857b6f	guibg=#080808	gui=none
-hi SpecialKey	ctermfg=241		ctermbg=235		cterm=none		guifg=#626262	guibg=#2b2b2b	gui=none
-hi WarningMsg	ctermfg=203										guifg=#ff5f55
-hi ErrorMsg		ctermfg=196		ctermbg=236		cterm=bold		guifg=#ff2026	guibg=#3a3a3a	gui=bold
-
-" Vim >= 7.0 specific colors
-if version >= 700
-hi CursorLine					ctermbg=236		cterm=none						guibg=#32322f
-hi MatchParen	ctermfg=228		ctermbg=101		cterm=bold		guifg=#eae788	guibg=#857b6f	gui=bold
-hi Pmenu		ctermfg=230		ctermbg=238						guifg=#ffffd7	guibg=#444444
-hi PmenuSel		ctermfg=232		ctermbg=192						guifg=#080808	guibg=#cae982
-endif
-
-" Diff highlighting
-hi DiffAdd						ctermbg=17										guibg=#2a0d6a
-hi DiffDelete	ctermfg=234		ctermbg=60		cterm=none		guifg=#242424	guibg=#3e3969	gui=none
-hi DiffText						ctermbg=53		cterm=none						guibg=#73186e	gui=none
-hi DiffChange					ctermbg=237										guibg=#382a37
-
-"hi CursorIM
-"hi Directory
-"hi IncSearch
-"hi Menu
-"hi ModeMsg
-"hi MoreMsg
-"hi PmenuSbar
-"hi PmenuThumb
-"hi Question
-"hi Scrollbar
-"hi SignColumn
-"hi SpellBad
-"hi SpellCap
-"hi SpellLocal
-"hi SpellRare
-"hi TabLine
-"hi TabLineFill
-"hi TabLineSel
-"hi Tooltip
-"hi User1
-"hi User9
-"hi WildMenu
-
-
-" Syntax highlighting
-hi Keyword		ctermfg=111		cterm=none		guifg=#88b8f6	gui=none
-hi Statement	ctermfg=111		cterm=none		guifg=#88b8f6	gui=none
-hi Constant		ctermfg=173		cterm=none		guifg=#e5786d	gui=none
-hi Number		ctermfg=173		cterm=none		guifg=#e5786d	gui=none
-hi PreProc		ctermfg=173		cterm=none		guifg=#e5786d	gui=none
-hi Function		ctermfg=192		cterm=none		guifg=#cae982	gui=none
-hi Identifier	ctermfg=192		cterm=none		guifg=#cae982	gui=none
-hi Type			ctermfg=186		cterm=none		guifg=#d4d987	gui=none
-hi Special		ctermfg=229		cterm=none		guifg=#eadead	gui=none
-hi String		ctermfg=113		cterm=none		guifg=#95e454	gui=italic
-hi Comment		ctermfg=246		cterm=none		guifg=#9c998e	gui=italic
-hi Todo			ctermfg=101		cterm=none		guifg=#857b6f	gui=italic
-
-
-" Links
-hi! link FoldColumn		Folded
-hi! link CursorColumn	CursorLine
-hi! link NonText		LineNr
-
-" vim:set ts=4 sw=4 noet:
diff --git a/core/conf/skel/.vim/swap/.gitignore b/core/conf/skel/.vim/swap/.gitignore
deleted file mode 100644
index e69de29..0000000
--- a/core/conf/skel/.vim/swap/.gitignore
+++ /dev/null
diff --git a/core/conf/skel/.vim/undodir/.gitignore b/core/conf/skel/.vim/undodir/.gitignore
deleted file mode 100644
index e69de29..0000000
--- a/core/conf/skel/.vim/undodir/.gitignore
+++ /dev/null
diff --git a/core/conf/skel/.vim/views/.gitignore b/core/conf/skel/.vim/views/.gitignore
deleted file mode 100644
index e69de29..0000000
--- a/core/conf/skel/.vim/views/.gitignore
+++ /dev/null
diff --git a/core/conf/skel/.vimrc b/core/conf/skel/.vimrc
deleted file mode 100644
index cf143fd..0000000
--- a/core/conf/skel/.vimrc
+++ /dev/null
@@ -1,150 +0,0 @@
-" An example for a vimrc file.
-"
-" Maintainer:	Bram Moolenaar <Bram@vim.org>
-" Last change:	2015 Mar 24
-"
-" To use it, copy it to
-"     for Unix and OS/2:  ~/.vimrc
-"	      for Amiga:  s:.vimrc
-"  for MS-DOS and Win32:  $VIM\_vimrc
-"	    for OpenVMS:  sys$login:.vimrc
-
-" When started as "evim", evim.vim will already have done these settings.
-if v:progname =~? "evim"
-  finish
-endif
-
-" Use Vim settings, rather than Vi settings (much better!).
-" This must be first, because it changes other options as a side effect.
-set nocompatible
-
-" allow backspacing over everything in insert mode
-set backspace=indent,eol,start
-
-if has("vms")
-  set nobackup		" do not keep a backup file, use versions instead
-else
-  set backup		" keep a backup file (restore to previous version)
-  set undofile		" keep an undo file (undo changes after closing)
-endif
-
-set history=50		" keep 50 lines of command line history
-set ruler		" show the cursor position all the time
-set showcmd		" display incomplete commands
-set incsearch		" do incremental searching
-
-" For Win32 GUI: remove 't' flag from 'guioptions': no tearoff menu entries
-" let &guioptions = substitute(&guioptions, "t", "", "g")
-
-" Don't use Ex mode, use Q for formatting
-map Q gq
-
-" CTRL-U in insert mode deletes a lot.  Use CTRL-G u to first break undo,
-" so that you can undo CTRL-U after inserting a line break.
-inoremap <C-U> <C-G>u<C-U>
-
-" In many terminal emulators the mouse works just fine, thus enable it.
-if has('mouse')
-  set mouse=a
-endif
-
-" Switch syntax highlighting on, when the terminal has colors
-" Also switch on highlighting the last used search pattern.
-if &t_Co > 2 || has("gui_running")
-  syntax on
-  set hlsearch
-  colorscheme wombat256mod
-endif
-
-" Only do this part when compiled with support for autocommands.
-if has("autocmd")
-
-  " Enable file type detection.
-  " Use the default filetype settings, so that mail gets 'tw' set to 72,
-  " 'cindent' is on in C files, etc.
-  " Also load indent files, to automatically do language-dependent indenting.
-  filetype plugin indent on
-
-  " Put these in an autocmd group, so that we can delete them easily.
-  augroup vimrcEx
-  au!
-
-  " For all text files set 'textwidth' to 78 characters.
-  autocmd FileType text setlocal textwidth=78
-
-  " When editing a file, always jump to the last known cursor position.
-  " Don't do it when the position is invalid or when inside an event handler
-  " (happens when dropping a file on gvim).
-  autocmd BufReadPost *
-    \ if line("'\"") >= 1 && line("'\"") <= line("$") |
-    \   exe "normal! g`\"" |
-    \ endif
-
-  augroup END
-
-else
-
-  set autoindent		" always set autoindenting on
-
-endif " has("autocmd")
-
-" Convenient command to see the difference between the current buffer and the
-" file it was loaded from, thus the changes you made.
-" Only define it when not defined already.
-if !exists(":DiffOrig")
-  command DiffOrig vert new | set bt=nofile | r ++edit # | 0d_ | diffthis
-		  \ | wincmd p | diffthis
-endif
-
-if has('langmap') && exists('+langnoremap')
-  " Prevent that the langmap option applies to characters that result from a
-  " mapping.  If unset (default), this may break plugins (but it's backward
-  " compatible).
-  set langnoremap
-endif
-
-map <F2> :tabnew
-map <F3> :tabprevious<CR>
-map <F4> :tabnext<CR>
-
-" Show Line Numbers
-set nu
-set complete=.,b,u,]
-set wildmode=longest,list:longest
-set completeopt=menu,preview
-
-" Directories
-set backupdir=~/.vim/backup
-set undodir=~/.vim/undodir
-set viewdir=~/.vim/views
-set directory=~/.vim/swap
-
-" Spell Check
-set spell spelllang=en_us
-
-" Strips whitespace
-nnoremap <leader>W :%s/\s\+$//<cr>:let @/=''<CR>
-
-" Whitespace fixes
-highlight ExtraWhitespace ctermbg=red guibg=red
-match ExtraWhitespace /\s\+$/
-autocmd BufWinEnter * match ExtraWhitespace /\s\+$/
-autocmd InsertEnter * match ExtraWhitespace /\s\+\%#\@<!$/
-autocmd InsertLeave * match ExtraWhitespace /\s\+$/
-autocmd BufWinLeave * call clearmatches()
-
-
-" For tab characters that appear 4-spaces-wide
-set tabstop=4
-" If you're using actual tab character in your source code you probably also 
-" want these settings (these are actually the defaults,set them defensively):
-set softtabstop=0 noexpandtab
-" Finally, if you want an indent to correspond to a single tab, you should also use:
-set shiftwidth=4
-" For indents that consist of 4 space characters but are entered with the tab key:
-set tabstop=8 softtabstop=0 expandtab shiftwidth=4 smarttab
-set list
-" set past gives problems with tabs
-" set paste
-
-
diff --git a/core/configure.html b/core/configure.html
index e0c558b..724b12f 100644
--- a/core/configure.html
+++ b/core/configure.html
@@ -52,11 +52,11 @@
         </pre>
 
         <p>Edit /etc/hosts to contain your hostname and FQDN,
-        this example also uses c9.example.org. If you wish get a
+        this example also uses core.privat-server.net. If you wish get a
         subdomain from
         <a href="http://freedns.afraid.org">afraid.org</a>
         pointing to your public ip, example of static 192.168.1.9 ip
-        with c9.example.org pointing to c9 host;</p>
+        with core.privat-server.net pointing to c9 host;</p>
 
         <pre>
         #
@@ -66,7 +66,7 @@
         # IPv4
         127.0.0.1	localhost c9
         #<ip-address>	<hostname.domain.org>	<aliases>
-        # 192.168.1.9	c9.example.org
+        # 192.168.1.9	core.privat-server.net
         </pre>
 
         <h2 id="time">1.2.2. Set timezone</h2>
@@ -292,7 +292,7 @@
         <a href="index.html">Core OS Index</a>
         <p>This is part of the c9 Manual.
         Copyright (C) 2016
-        Silvino Silva.
+        c9 team.
         See the file <a href="../fdl-1.3-standalone.html">Gnu Free Documentation License</a>
         for copying conditions.</p>
     </body>
diff --git a/core/dash.html b/core/dash.html
index e4eefc6..18045e5 100644
--- a/core/dash.html
+++ b/core/dash.html
@@ -21,7 +21,7 @@
         <a href="index.html">Core OS Index</a>
         <p>This is part of the c9 Manual.
         Copyright (C) 2016
-        Silvino Silva.
+        c9 team.
         See the file <a href="../fdl-1.3-standalone.html">Gnu Free Documentation License</a>
         for copying conditions.</p>
     </body>
diff --git a/core/exim.html b/core/exim.html
index bf31a00..c2a5a63 100644
--- a/core/exim.html
+++ b/core/exim.html
@@ -11,11 +11,15 @@
         <h2 id="conf">2.5.1. Exim Configuration</h2>
 
         <p>Exim come with default configuration we will change to mach system settings
-        <a href="../conf/etc/exim/aliases">/etc/exim/exim.conf</a>.</p>
+        <a href="conf/etc/exim/exim.conf">/etc/exim/exim.conf</a>.</p>
 
         <h2 id="cert">2.5.2. Certificates</h2>
 
-        <p>Create private key;</p>
+        <p>Create private key, this example issues a certificate to 
+        core.privat-server.net, if you wish get a subdomain from
+        <a href="http://freedns.afraid.org">afraid.org</a>
+        pointing to your public ip.
+        </p>
 
         <pre>
 	$ sudo mkdir /etc/ssl/keys
@@ -40,8 +44,8 @@
 	Locality Name (eg, city) []:
 	Organization Name (eg, company) [Internet Widgits Pty Ltd]:
 	Organizational Unit Name (eg, section) []:
-	Common Name (e.g. server FQDN or YOUR name) []:c13.nark.biz.tm
-	Email Address []:c1admin@c13.nark.biz.tm
+	Common Name (e.g. server FQDN or YOUR name) []:core.privat-server.net
+	Email Address []:postmaster@core.privat-server.net
 	#
         </pre>
 
@@ -54,7 +58,7 @@
         <h2 id="alias">2.5.3. Aliases</h2>
 
         <p>Exim come with default aliases we will change to mach system settings
-        <a href="../conf/etc/exim/aliases">/etc/exim/aliases;</a></p>
+        <a href="conf/etc/exim/aliases">/etc/exim/aliases;</a></p>
 
         <pre>
         # Default aliases file, installed by Exim. This file contains no real aliases.
@@ -63,7 +67,7 @@
         # The following alias is required by the mail RFCs 2821 and 2822.
         # Set it to the address of a HUMAN who deals with this system's mail problems.
 
-        postmaster: c1admin@localhost
+        postmaster: c9admin
 
         # It is also common to set the following alias so that if anybody replies to a
         # bounce message from this host, the reply goes to the postmaster.
@@ -213,11 +217,8 @@
         <p>
         This is part of the c9 Manual.
         Copyright (C) 2016
-        Silvino Silva.
+        c9 team.
         See the file <a href="../fdl-1.3-standalone.html">Gnu Free Documentation License</a>
         for copying conditions.</p>
-
-
-
     </body>
 </html>
diff --git a/core/index.html b/core/index.html
index fce7170..1200ca6 100644
--- a/core/index.html
+++ b/core/index.html
@@ -117,10 +117,13 @@
             </li>
 
         </ul>
+
+        <a href="../index.html">Documentation Index</a>
+
         <p>
         This is part of the c9-doc Manual.
         Copyright (C) 2016
-        Silvino Silva.
+        c9 team.
         See the file <a href="../fdl-1.3-standalone.html">Gnu Free Documentation License</a>
         for copying conditions.</p>
 
diff --git a/core/install.html b/core/install.html
index 89c2e8c..f956cf4 100644
--- a/core/install.html
+++ b/core/install.html
@@ -367,7 +367,7 @@
         <a href="index.html">Core OS Index</a>
         <p>This is part of the c9 Manual.
         Copyright (C) 2016
-        Silvino Silva.
+        c9 team.
         See the file <a href="../fdl-1.3-standalone.html">Gnu Free Documentation License</a>
         for copying conditions.</p>
 
diff --git a/core/linux.html b/core/linux.html
index ba80aab..53fc304 100644
--- a/core/linux.html
+++ b/core/linux.html
@@ -124,7 +124,7 @@
         <a href="index.html">Core OS Index</a>
         <p>This is part of the c9-doc Manual.
 Copyright (C) 2016
-Silvino Silva.
+c9 team.
 See the file <a href="../fdl-1.3-standalone.html">Gnu Free Documentation License</a>
 for copying conditions.</p>
 
diff --git a/core/network.html b/core/network.html
index c2fff12..04f1266 100644
--- a/core/network.html
+++ b/core/network.html
@@ -318,7 +318,7 @@
         <p>
         This is part of the c9-doc Manual.
         Copyright (C) 2016
-        Silvino Silva.
+        c9 team.
         See the file <a href="../fdl-1.3-standalone.html">Gnu Free Documentation License</a>
         for copying conditions.</p>
 
diff --git a/core/package.html b/core/package.html
index 45593a6..21c029a 100644
--- a/core/package.html
+++ b/core/package.html
@@ -182,7 +182,7 @@
         <a href="index.html">Core OS Index</a>
         <p>This is part of the c9-doc Manual.
         Copyright (C) 2016
-        Silvino Silva.
+        c9 team.
         See the file <a href="../fdl-1.3-standalone.html">Gnu Free Documentation License</a>
         for copying conditions.</p>
 
diff --git a/core/ports.html b/core/ports.html
index e566aba..1d06877 100644
--- a/core/ports.html
+++ b/core/ports.html
@@ -208,7 +208,7 @@
         <p>
         This is part of the c9-doc Manual.
         Copyright (C) 2016
-        Silvino Silva.
+        c9 team.
         See the file <a href="../fdl-1.3-standalone.html">Gnu Free Documentation License</a>
         for copying conditions.</p>
     </body>
diff --git a/core/reboot.html b/core/reboot.html
index ff659b4..3a6758d 100644
--- a/core/reboot.html
+++ b/core/reboot.html
@@ -123,7 +123,7 @@
         <a href="index.html">Core OS Index</a>
         <p>This is part of the c9-doc Manual.
         Copyright (C) 2016
-        Silvino Silva.
+        c9 team.
         See the file <a href="../fdl-1.3-standalone.html">Gnu Free Documentation License</a>
         for copying conditions.</p>
     </body>
diff --git a/core/tmux.html b/core/tmux.html
index 58f223f..d1ab587 100644
--- a/core/tmux.html
+++ b/core/tmux.html
@@ -110,7 +110,7 @@
         <p>
         This is part of the c9-doc Manual.
         Copyright (C) 2016
-        Silvino Silva.
+        c9 team.
         See the file <a href="../fdl-1.3-standalone.html">Gnu Free Documentation License</a>
         for copying conditions.</p>
 
diff --git a/core/tty-terminal.html b/core/tty-terminal.html
index 33a29f9..47f7bf0 100644
--- a/core/tty-terminal.html
+++ b/core/tty-terminal.html
@@ -74,7 +74,7 @@
         <a href="index.html">Core OS Index</a>
         <p>This is part of the c9 Manual.
         Copyright (C) 2016
-        Silvino Silva.
+        c9 team.
         See the file <a href="../fdl-1.3-standalone.html">Gnu Free Documentation License</a>
         for copying conditions.</p>
     </body>