Support to multi MTAs

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#1 Thu, 12/14/2006 - 13:55

Support to multi MTAs


I have mail services: main and a sub-domain running on two separate servers, with one on sendmail and the other on postfix+cyrus. I wish to run both the domains under one host, and since they are in production, wish to retain separate MTAs, one for each domain. I have a single NIC on this host and wish to share port 25 between the two. Kindly let me know how this can be achieved.

Thanks in advance

Thu, 12/14/2006 - 15:28
Joe's picture

Howdy Gowranga,

Two services can't share the same IP:port combination.

Your only option, if you <i>must</i> keep two MTAs would be to use one running on port 25 to forward to the other running on a different port for certain domains. Both Sendmail and Postfix can do this, though I think it's easier in Postfix (almost everything is easier in Postfix, unless you speak the super-secret-encrypted Sendmail configuration lanuage--even the m4 file is a bit baffling to me).


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