Exim 3.3X
Is it possible to have mail for the default domain checked against an
aliases file, but still have it smarthosted elsewhere.
It appears that the only way I can check the systems aliases file is if
the address is local, but I don't want any local mail to be stored on the
machine, but rather smarthosted to another box.
If I setup the domain as non-local the smart hosting works, but there is
no way to check the aliases file.
Example.. for a server with the domain oldco.com, mail would arrive for
oncall-admin@??? the systems aliases file has an entry like:
oncall-admin: person@???
so the result would be mail bound for person@???, that would be sent
on to the smarthost for the oldco.com domain.
I've done something like this with Virtual hosts, but any resulting local
addresses were stored on the same box. In this configuration no mail is
stored on the box for users, their mailboxes are elsewhere.
We have a lot of boxes in a firewall that send out email without knowing
who the current person to contact is. The mail hub's aliases file is
updated daily with the current contact for certain functions.
With the exception of the aliases file checking all other mail routing
works the way it needs to now with the following configuration.
Note that there are no virtual hosts on this host now. I am not using the
domain as a local host since it would not be processed by the domainlist
to smart host those users to the exchange server.
Configure Info...
######################################################################
# MAIN CONFIGURATION SETTINGS #
######################################################################
primary_hostname = mailhub.oldco.com
qualify_domain = oldco.com
# NOTE no virtual hosts are setup on this machine so local_domains =
local_domains = partial-lsearch;/usr/local/exim/DOMAINS
forbid_domain_literals
trusted_users = root
log_all_parents
log_file_path = /var/log/exim/%s.log
log_received_recipients
log_refused_recipients
log_received_sender
log_smtp_confirmation
ignore_errmsg_errors_after = 2d
timeout_frozen_after = 5d
######################################################################
# TRANSPORTS CONFIGURATION #
######################################################################
remote_smtp:
driver = smtp
local_delivery:
driver = appendfile
file = /var/mail/$local_part
delivery_date_add
envelope_to_add
return_path_add
# group = mail
mode = 0600
mode_fail_narrower = false
address_pipe:
driver = pipe
return_output
user = exim
use_shell = true
address_file:
driver = appendfile
delivery_date_add
envelope_to_add
return_path_add
address_reply:
driver = autoreply
######################################################################
# DIRECTORS CONFIGURATION #
######################################################################
#No virtual domains so this is not used at this time.
virtual_aliases:
driver = aliasfile
domains = "partial-lsearch;/usr/local/exim/DOMAINS"
file_transport = address_file
pipe_transport = address_pipe
file = /usr/local/exim/vdomain/${domain_data}
search_type = "lsearch*"
system_aliases:
domains = oldco.com
driver = aliasfile
file = /etc/aliases
search_type = lsearch
user = exim
group = mail
# return_fail_output = false
file_transport = address_file
pipe_transport = address_pipe
userforward:
domains = oldco.com
driver = forwardfile
file = .forward
no_verify
no_expn
check_ancestor
# filter
file_transport = address_file
pipe_transport = address_pipe
reply_transport = address_reply
localuser:
domains = oldco.com
driver = localuser
transport = local_delivery
# Tried to do something like below so that if
# local_domain = oldco.com
# it would forward to remote_smtp......
#
#localuser:
# domains = oldco.com
# driver = smtp
# transport = remote_smtp
#
# which of course didn't work.
######################################################################
# ROUTERS CONFIGURATION #
######################################################################
#Catch various different hostname combinations and their specific
#delivery locations. See below for what is in Routes...
checkfor_special:
driver = domainlist
transport = remote_smtp
route_file = /usr/local/exim/Routes
search_type = partial-lsearch
# if it doesn't match and of the above, then smart host the rest
# to the outside mail server.
smart_route:
driver = domainlist
transport = remote_smtp
route_list = * mailhost.newco.com bydns_mx
# I don't think this ever gets here now
lookuphost:
driver = lookuphost
transport = remote_smtp
ignore_target_hosts = 127.0.0.0/8
######################################################################
The /usr/local/exim/Routes file contains:
# Match specific hosts for routing to processing server
attfax.oldco.com: processor.oldco.com bydns_a
atttelex.oldco.com: processor.oldco.com bydns_a
vsifax.oldco.com: processor.oldco.com bydns_a
skytel.oldco.com: processor.oldco.com bydns_a
pagenet.oldco.com: processor.oldco.com bydns_a
attinvf.oldco.com: processor.oldco.com bydns_a
attinvt.oldco.com: processor.oldco.com bydns_a
# Route any mail for any other user@??? to that
# unix host via A record
*.oldco.com: $domain bydns_a
# Catch any username@??? and send it to the exchange server
oldco.com: inboundmail.oldco.com byname
--
Kevin
