I've set up a SIMS mail server to front end for my front-end host
which, until now, has been receiving mail directly. Unfortunately,
all test messages are being bounced with the error:
Failed to deliver your message to [EMAIL PROTECTED]
SMTP: DNS Routing Loop
The Domain Name System record for 'mail.abc.com'
points back to 'mail.abc.com'
Based on my DNS and SIMS config, I can see how this is happening.
My question is, "How to make this work correctly?"
What I want to happen is that all mail to all hosts in the abc.com domain
will be filtered through the SIMS server (1.8b9d14, 68K version) and then
sent onward to the single front-end host. There will be no accounts on
the SIMS server. There are no other hosts with users who receive mail.
The non-working config includes:
DNS:
abc.com. A 123.456.123.456
MX 10 mail.abc.com
MX 20 abc.com
mail.abc.com. A 123.456.123.457
SIMS Router:
;there are several records redirecting specific addresses, such as
<abuse> = [EMAIL PROTECTED]
;but nothing mentioning either mail.abc.com or abc.com on the left
side of an "="
Based on this config, incoming mail goes to the SIMS box (mail.abc.com),
gets spam filtered, and is routed to abc.com. I'm guessing that SIMS
does an MX record lookup at this point and finds that it has to route
back to itself...which is a loop.
Thanks for useful advice.
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