[TriLUG] secondary MX

[John Franklin]

On Tue, Jun 28, 2005 at 03:09:46PM -0400, Tanner Lovelace wrote:
> That's it.  From then on it just works.  If a server can't contact
> your server to pass mail (which it will do first because of the
> higher priority [lower number] on the MX record) it goes to
> the next server in the list which would be mail.trilug.org.
> The trilug mail server will then notice that another MX has 
> precedence over it and try to deliver it to your server.  It
> will keep trying based on the postfix retry configuration 
> (which is just the standard for us right now).

Spammers will try all MX records.  If the first one fails with a 5xx
NO SPAM ALLOWED, which should be a fatal error, it'll try the next one 
until it gets through or fails on all of them.

jf
-- 
John Franklin
franklin at elfie.org
ICBM: N37 12'54", W80 27'14" Z+2100'
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