[Exim] Q: virtual domains :)

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Author: Miroslav Hudec
Date:  
To: exim-users
Old-Topics: Re: [Exim] "host_auth_accept_relay" in exim 3.34
Subject: [Exim] Q: virtual domains :)
This message is in MIME format. The first part should be readable text,
while the remaining parts are likely unreadable without MIME-aware tools.
Send mail to mime@??? for more info.
--

Hi ppl,

I have a box with multiple domain names. I've configured the exim
according to examples in Cxx and
http://www.reedmedia.net/software/virtualmail-pop3d/mda/configure-for-exim-3.33

Part of the configuration directs exim to save the mails in to
/var/spool/virtual/$domain/$local_part
from exim.conf:

local_domains = "${primary_hostname}:\
    lsearch;/etc/virtual/domains"



Transport
virtual_localdelivery:
driver = appendfile
create_directory = true
directory_mode = 700
file = /var/spool/virtual/${domain}/${local_part}
user = mail
group = mail
mode = 660


My box has few names for the same domain:
file /etc/virtual/domains:

domain1.com
www.domain1.com
peace.domain.com
www.peace.domain1.com
wwwpeace.domain1.com
www.pece.domain1.com

domain2.com
www.domain2.com
war.domain2.com
www.war.domain2.com
...

Now, my question is How will the exim create the subdirectories in
/var/spool/virtual (will it create directories like like
/var/spool/virtual/domain1.com, /var/spool/virtual/www.domain1.com,
/var/spool/virtual/www.peace.doman1.com ..... )

or how can I force the mails sent to
*.domain1.com
to be saved to

/var/spool/virtual/domain1.com/
/var/spool/virtual/domain2.com/

I've found some address rewiriting hooks but I am not sure if it is
the "simplest" (and a little bit unclear for me) way how to do it -
maybe via partial search. (the simplest solution is to make symbolic
links in /var/spool/virtual to the corresponding directories e.g. the
/var/spool/virtual/www.peace.domain1.com will point to the
/var/spool/domain1.com and so on. - is it correct solution ?)




The second question is about default users. The director is :

virtual_alias:
driver = aliasfile
file_transport = address_file
pipe_transport = address_pipe
domains = lsearch;/etc/virtual/domains
file = /etc/virtual/${domain}/aliases
search_type = lsearch*
user = mail
qualify_preserve_domain

how to catch all mails to non-existing users and put them to the
domain's defaultmailuser ? It is enough if i put to the
/etc/virtual/domain1.com/aliases file a line with

mike@domain1:     user@???
*@domain1:    user@???


?


The actual exim conf is mixture of Debian's woody
exim.conf and
http://www.reedmedia.net/software/virtualmail-pop3d/mda/configure-for-exim-3.33
and is attached to the mail. There is only one IP for the box, and there
is no MX record in DNS for domain1.

the /etc/virtual/domains contains lines as above and the
/etc/virtual/domain1.com/aliases contain:

*@domain1.com:    peace@???


and
/etc/virtual/domain2.com/aliases

*@domain2.com:     war@???


the /etc/virtual/doman1.com/passwd contains:

peace:blahblahpasspeace
user:blablahpassuser

and

/etc/virtual/doman1.com/passwd

war:blahblahpasswar
user:blahblahpassuser


Sorry for such a long mail and maybe stupid questions but i did not
found the correct solution :( :)



Thank You

Miro



--
Content-Description:

# This is the main exim configuration file.
# It was originally generated by `eximconfig', part of the exim package
# distributed with Debian, but it may edited by the mail system administrator.
# This file originally generated by eximconfig at Wed Nov 28 23:19:11 CET 2001
# See exim info section for details of the things that can be configured here.

# Please see the manual for a complete list
# of all the runtime configuration options that can be included in a
# configuration file.

# This file is divided into several parts, all but the last of which are
# terminated by a line containing the word "end". The parts must appear
# in the correct order, and all must be present (even if some of them are
# in fact empty). Blank lines, and lines starting with # are ignored.

######################################################################
#                    MAIN CONFIGURATION SETTINGS                     #
######################################################################

# Specify the domain you want to be added to all unqualified addresses
# here. Unqualified addresses are accepted only from local callers by
# default. See the receiver_unqualified_{hosts,nets} options 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 = peace.domain1.com

# 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.

local_domains = localhost:209.247.228.201:peace.domain1.com:\
        lsearch;/etc/virtual/domains

# Allow mail addressed to our hostname, or to our IP address.

local_domains_include_host = true
local_domains_include_host_literals = true

# No local deliveries will ever be run under the uids of these users (a colon-
# separated list). An attempt to do so gets changed so that it runs under the
# uid of "nobody" instead. This is a paranoic safety catch. Note 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 setting below would, if uncommented, cause Exim to check the syntax of
# all the headers that are supposed to contain email addresses (To:, From:,
# etc). This reduces the level of bounced bounces considerably.

# headers_check_syntax


# The setting below allows your host to be used as a mail relay only by
# localhost: it locks out the use of your host as a mail relay by any
# other host. See the section of the manual entitled "Control of relaying"
# for more info.

host_accept_relay = localhost

# If you want Exim to support the "percent hack" for all your local domains,
# uncomment the following line. This is the feature by which mail addressed
# to x%y@z (where z is one of your local domains) is locally rerouted to
# x@y and sent on. Otherwise x%y is treated as an ordinary local part

# percent_hack_domains=*

# If this option is set, then any process that is running as one of the
# listed users may pass a message to Exim and specify the sender's
# address using the "-f" command line option, without Exim's adding a
# "Sender" header.

trusted_users = mail

# If this option is true, the SMTP command VRFY is supported on incoming
# SMTP connections; otherwise it is not.

smtp_verify = true


gecos_pattern = ^([^,:]*)
gecos_name = $1


smtp_accept_queue_per_connection = 100

# Send a mail to the postmaster when a message is frozen. There are many
# reasons this could happen; one is if exim cannot deliver a mail with no
# return address (normally a bounce) another that may be common on dialup
# systems is if a DNS lookup of a smarthost fails. Read the documentation
# for more details: you might like to look at the auto_thaw option

freeze_tell_mailmaster = true

# This string defines the contents of the \`Received' message header that
# is added to each message, except for the timestamp, which is automatically
# added on at the end, preceded by a semicolon. The string is expanded each
# time it is used.

received_header_text = "Received: \
         ${if def:sender_rcvhost {from ${sender_rcvhost}\n\t}\
         {${if def:sender_ident {from ${sender_ident} }}\
         ${if def:sender_helo_name {(helo=${sender_helo_name})\n\t}}}}\
         by ${primary_hostname} \
         ${if def:received_protocol {with ${received_protocol}}} \
         (Exim ${version_number} #${compile_number} (Debian))\n\t\
         id ${message_id}\
         ${if def:received_for {\n\tfor <$received_for>}}"
end


######################################################################
#                      TRANSPORTS CONFIGURATION                      #
######################################################################
#                       ORDER DOES NOT MATTER                        #
#     Only one appropriate transport is called for each delivery.    #
######################################################################

# This transport is used for local delivery to user mailboxes. On debian
# systems group mail is used so we can write to the /var/spool/mail
# directory. (The alternative, which most other unixes use, is to deliver
# as the user's own group, into a sticky-bitted directory)

virtual_localdelivery:
  driver = appendfile
  create_directory = true
  directory_mode = 700
  file = /var/spool/virtual/${domain}/${local_part}
  user = mail
  group = mail
  mode = 660



local_delivery:
  driver = appendfile
  group = mail
  mode = 0660
  mode_fail_narrower = false
  envelope_to_add = true
  file = /var/spool/mail/${local_part}

# This transport is used for handling pipe addresses 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 if you want this to happen only when the
# pipe fails to complete normally.

address_pipe:
  driver = pipe
  return_output

# This transport is used for handling file addresses generated by alias
# or .forward files.

address_file:
  driver = appendfile

# This transport is used for handling file addresses generated by alias
# or .forward files if the path ends in "/", which causes it to be treated
# as a directory name rather than a file name. Each message is then delivered
# to a unique file in the directory. If instead you want all such deliveries to
# be in the "maildir" format that is used by some other mail software,
# uncomment the final option below. If this is done, the directory specified
# in the .forward or alias file is the base maildir directory.
#
# Should you want to be able to specify either maildir or non-maildir
# directory-style deliveries, then you must set up yet another transport,
# called address_directory2. This is used if the path ends in "//" so should
# be the one used for maildir, as the double slash suggests another level
# of directory. In the absence of address_directory2, paths ending in //
# are passed to address_directory.

address_directory:
  driver = appendfile
  no_from_hack
  prefix = ""
  suffix = ""
# maildir_format

# This transport is used for handling autoreplies generated by the filtering
# option of the forwardfile director.

address_reply:
  driver = autoreply

# This transport is used for procmail

procmail_pipe:
  driver = pipe
  command = "/usr/bin/procmail -d ${local_part}"
  return_path_add
  delivery_date_add
  envelope_to_add
  check_string = "From "
  escape_string = ">From "
  user = $local_part
  group = mail


# This transport is used for delivering messages over SMTP connections.

remote_smtp:
  driver = smtp

end


######################################################################
#                      DIRECTORS CONFIGURATION                       #
#             Specifies how local addresses are handled              #
######################################################################
#                          ORDER DOES MATTER                         #
#   A local address is passed to each in turn until it is accepted.  #
######################################################################


# This allows local delivery to be forced, avoiding alias files and
# forwarding.

real_local:
  prefix = real-
  driver = localuser
  transport = local_delivery

# virtual aliases
virtual_alias:
   driver = aliasfile
   file_transport = address_file
   pipe_transport = address_pipe
   domains = lsearch;/etc/virtual/domains
   file = /etc/virtual/${domain}/aliases
   search_type = lsearch*
   user = mail
   qualify_preserve_domain

# This director handles aliasing using a traditional /etc/aliases file.
# 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.

system_aliases:
  driver = aliasfile
  domains = "! lsearch;/etc/virtual/domains : \ *"
  file_transport = address_file
  pipe_transport = address_pipe
  file = /etc/aliases
  search_type = lsearch
# user = list
# Uncomment the above line if you are running smartlist


# This director runs procmail for users who have a .procmailrc file

procmail:
  domains = "! lsearch;/etc/virtual/domains : \ *"
  driver = localuser
  transport = procmail_pipe
  require_files = ${local_part}:+${home}:+${home}/.procmailrc:+/usr/bin/procmail
  no_verify

# This director handles forwarding using traditional .forward files.
# It also allows mail filtering when a forward file starts with the
# string "# Exim filter": to disable filtering, uncomment the "filter"
# option. 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.

# For standard debian setup of one group per user, it is acceptable---normal
# even---for .forward to be group writable. If you have everyone in one
# group, you should comment out the "modemask" line. Without it, the exim
# default of 022 will apply, which is probably what you want.

userforward:
  domains = "! lsearch;/etc/virtual/domains : \ *"
  driver = forwardfile
  file_transport = address_file
  pipe_transport = address_pipe
  reply_transport = address_reply
  no_verify
  check_ancestor
  file = .forward
  modemask = 002
  filter

virtual_localuser:
   driver = aliasfile
   file_transport = address_file
   pipe_transport = address_pipe
   transport = virtual_localdelivery
   domains = lsearch;/etc/virtual/domains
   file = /etc/virtual/$domain/passwd
   search_type = lsearch
   no_more

# This director matches local user mailboxes.

localuser:
  domains = "! lsearch;/etc/virtual/domains : \ *"
  driver = localuser
  transport = local_delivery

end


######################################################################
#                      ROUTERS CONFIGURATION                         #
#            Specifies how remote addresses are handled              #
######################################################################
#                          ORDER DOES MATTER                         #
#  A remote address is passed to each in turn until it is accepted.  #
######################################################################

# Remote addresses are those with a domain that does not match any item
# in the "local_domains" setting above.

# This router routes to remote hosts over SMTP using a DNS lookup with
# default options.

lookuphost:
  driver = lookuphost
  transport = remote_smtp

# This router routes to remote hosts over SMTP by explicit IP address,
# given as a "domain literal" in the form [nnn.nnn.nnn.nnn]. The RFCs
# require this facility, which is why it is enabled by default in Exim.
# If you want to lock it out, set forbid_domain_literals in the main
# configuration section above.

literal:
  driver = ipliteral
  transport = remote_smtp

end


######################################################################
#                      RETRY CONFIGURATION                           #
######################################################################

# 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 2 hours and increasing each time by a factor of 1.5, up to 16
# hours, then retries every 8 hours until 4 days have passed since the first
# failed delivery.

# Domain               Error       Retries
# ------               -----       -------

*                      *           F,2h,15m; G,16h,2h,1.5; F,4d,8h

end


######################################################################
#                      REWRITE CONFIGURATION                         #
######################################################################


# There are no rewriting specifications in this default configuration file.


# This rewriting rule is particularly useful for dialup users who
# don't have their own domain, but could be useful for anyone.
# It looks up the real address of all local users in a file

#*@domain1.com    ${lookup{$1}lsearch{/etc/email-addresses}\
#                        {$value}fail} bcfrF

# End of Exim configuration file
--