On Wed, 5 Jul 2006, christian meutes wrote:
> They can only be identified by the lookup on the MX-record.
Your original attempt, namely
remote_smtp:
driver = smtp
hosts_override = true
hosts = ${if eq{$host}{10.10.10.10}{$host}{172.20.20.20}}
Doesn't work because $host is not set at this point. But if you can
somehow identify the domains, a special transport with hosts_override
might do the trick. One way could be to do your own DNS lookups using
dnsdb, as suggested already.
Here's an evil idea: Set
extra_local_interfaces = 10.10.10.10
Then add
self = pass
pass_router = xxxx
to the dnslookup router. Then add, at the very end of your routers
# Reject anything that gets this far
fail:
driver = redirect
data = :fail: Unknown recipient
xxxx:
driver = accept
transport = xxxx
and then a suitable xxxx transport with a fixed host.
WARNING: This assumes that no other domain that hits the dnslookup
router is going to route to a local IP.
This is probably even more evil than using translate_ip_address.
--
Philip Hazel University of Cambridge Computing Service
Get the Exim 4 book: http://www.uit.co.uk/exim-book
