Re: [EXIM] Mail through a router

Top Page
Delete this message
Reply to this message
Author: Dave Waller
Date:  
To: exim-users
Subject: Re: [EXIM] Mail through a router
Philip Hazel wrote:

> On Thu, 1 Oct 1998, Dave Waller wrote:
>
> > I want exim installed on a router computer to pass all mail to an
> > inside mail server.
> >
> > In the FAQ's the talk about this, would this be correct?
> >
> > local_domains =
> > send_to_gateway:
> >            driver = domainlist
> >            transport = remote_smtp
> >            route_list = 172.16.0.32

>
> Not quite. You need
>
> route_list = * 172.16.0.32 byname
>
> The * says "for all domains" and the "byname" says "look up the host
> name by name, not as a DNS domain". In this case, the "name" is the IP
> address.
>
> --
> Philip Hazel            University of Cambridge Computing Service,
> ph10@???      Cambridge, England. Phone: +44 1223 334714.


OK I must be a rock. I have tried this quite a few times and I can not
get it working. What I really want to do is have exim installed on a
linux computer setup as a router (www.linuxrouter.org). This is
connected to the internet and my local network (172.16.0.0).

I have a machine on the inside (172.16.0.32) that I want to actually
recieve and do the pop/smtp thing for the users. I can't figure out if
my ipfwadm rules are blocking traffic or my exim configure is dorked.

below is my configure.

Thanks in advance for any help.

Dave Waller


######################################################################
#                  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.


# 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 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.

# primary_hostname =


# 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@???" 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 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 =


# 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 =


# Specify your local domains as a colon-separated list here. If this
option
# is not set (i.e. not mentioned in the configuration file), the
# qualify_recipient value is used as the only local domain. If you do not
want
# to do any local deliveries, uncomment the following line, but do not
supply
# any data for it. This sets local_domains to an empty string, which is
not
# the same as not mentioning it at all. An empty string specifies that
there
# are no local domains; not setting it at all causes the default value
(the
# setting of qualify_recipient) to be used.

local_domains =


# If you want to accept mail addressed to your host's literal IP address,
for
# example, mail addressed to "user@???", then uncomment the

# following line, or supply the literal domain(s) as part of
"local_domains"
# above.

# local_domains_include_host_literals


# 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_nets = 0.0.0.0/0


# Exim contains support for the Realtime Blocking List (RBL) that is
being
# maintained as part of the DNS. See http://maps.vix.com/rbl/ for
background.
# Uncommenting the following line will make Exim reject mail from any
# host whose IP address is blacklisted in the RBL at maps.vix.com.

# rbl_domains = rbl.maps.vix.com


# The setting below locks out the use of your host as a mail relay by any

# other host. If you want to permit relaying through your host from
certain
# hosts or IP networks, you need to vary this option and/or make use of
the
# other three options in the set sender_{host,net}_{accept,reject}_relay.

# See the section of the manual entitled "Control of relaying" for more
info.
# Removing this setting altogether is not recommended, because there are
many
# unscrupulous people out there who will make use of open relays to try
to
# disguise the source of unsolicited bulk mail.

sender_host_reject_relay = *


# 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=*


end



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


# A transport is used only when referenced from a director or a router
that
# successfully handles an address.


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

remote_smtp:
driver = smtp


# This transport is used for local delivery to user mailboxes. 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 addresses generated by alias
# or .forward files. It has a conventional name, since it is not actually

# mentioned elsewhere in this configuration file. (A different name *can*

# be specified via the "address_pipe_transport" option if you really want

# to.) 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. It has a conventional name, since it is not actually

# mentioned elsewhere in this configuration file.

address_file:
driver = appendfile
delivery_date_add
envelope_to_add
return_path_add


# 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
delivery_date_add
envelope_to_add
return_path_add
no_from_hack
prefix = ""
suffix = ""
# maildir_format


# This transport is used for handling autoreplies generated by the
filtering
# option of the forwardfile director. It has a conventional name, since
it
# is not actually mentioned elsewhere in this configuration file.

address_reply:
driver = autoreply


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.  #
######################################################################


# Local addresses are those with a domain that matches some item in the
# "local_domains" setting above, or those which are passed back from the
# routers because of a "self=local" setting (not used in this
configuration).


# 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
file = /etc/aliases
search_type = lsearch
# user = exim


# This director handles forwarding using traditional .forward files.
# If you want it also to allow mail filtering when a forward file
# starts with the string "# Exim filter", 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.

userforward:
driver = forwardfile
file = .forward
no_verify
check_ancestor
# filter


# This director matches local user mailboxes.

localuser:
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




send_to_gateway:
        driver = domainlist
        transport = remote_smtp
        route_list = * 172.16.0.32 byname
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.

# End of Exim configuration file




--
*** Exim information can be found at http://www.exim.org/ ***