[Gllug] Configuring SPF to cope with secondary incoming mail servers

[Jason Clifford]

On Tue, 5 Dec 2006, David Damerell wrote:

> SPF merits aside, why bother with a secondary MX?

Because there are lots of servers running broken MTAs which will bounce or 
drop message if the primary MX is not available. Others may be configured 
not to retry for long periods of time.

A secondary MX provides somewhere for the email to be accepted and 
forwarded according to a sane policy.

Jason
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