From: Victor Duchovni (no email)
Date: Wed Dec 01 2004 - 13:24:59 EST
On Wed, Dec 01, 2004 at 06:15:44PM +0000, Comfy Couch wrote:
> Theory:
> My server used to be known as mxb1.biz.company.com, but I
> disliked the "1" and so prefer to use "mxb.biz.company.com",
> even though both A records still exist, and a bunch of customer
> domains still refer to "mxb1" for now.
> So Postfix receives the mail and normally just punts it along to the
> primary server (the customer box). But if that customer box goes
> down, then the Postfix servers try to send to the next hop - which
> they don't realize is actually themselves.
The theory is wrong. Postfix loop elimination is address based
not name based. Make sure that inet_interfaces + proxy_interfaces
includes all possible IP addresses that result from names listed in
all MX records. Postfix prunes the MX list at and above the the lowest
preference that resolves to one of its own addresses.
-- Viktor. Disclaimer: off-list followups get on-list replies or get ignored. Please do not ignore the "Reply-To" header. To unsubscribe from the postfix-users list, visit http://www.postfix.org/lists.html or click the link below: <mailto:?body=unsubscribe%20postfix-users>
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