Hello,
It is a requirement here that for the mailhub to send mail to machines
within the University then they must have MX records - this gives us a simple
bit of control over who is running mail systems. Previously we included an
'mx_domains' option to a router which also had a condition that the address
was within our domain (i.e. the University of Plymouth). No problem.
I have now changed things a little and moved the 'mx_domains' to the smtp
transport that is used. However, mail is being sent to domains which do not
have MX records. Running 'exim -d11' shows it carrying out a DNS lookup of
MX records; finding none and then looking up the A record - which succeeeds.
But this is part of the routing process. It then queues the message for
the transport. It seems that setting mx_domains on the transport itself
doesn't do anything.
We have as the transport:
plym_smtp:
driver = smtp
allow_localhost
no_multi_domain
hosts = $domain
mx_domains = ! LOCAL_DOMAINS : ! cdb;TABLES/test-domains.cdb : *.PLYMOUTH
: *.PLYM_SHORT
(The machine in question is not a test-domain but is within '*.PLYMOUTH'.)
The router is:
local_lookup:
no_more
domains = "*.PLYMOUTH:*.PLYM_SHORT:PLYMOUTH:PLYM_SHORT"
driver = lookuphost
self = reroute:PLYMOUTH
transport = plym_smtp
As said, if I move the mx_domains to the router it all works well.
Any thoughts appreciated. We are using exim 3.03.
John.
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John Horne, University of Plymouth, UK Tel: +44 (0)1752 233914
E-mail: jhorne@???
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