From: Wietse Venema (wietseporcupine.org)
Date: Thu Nov 01 2007 - 13:06:20 CDT

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gordanbobich.net:
> Thank you all for helping me troubleshoot this. On a separate note,
> Postfix doesn't try just the top 5 MX-es as was implied in an earlier
> post. It tries all of them at least up to 17. ;-)

Postfix by default truncates the list of IP addresses to just five.

Parameter: smtp_mx_address_limit

> As to why it kept re-trying the 17th 6 times in 5 hours rather than trying
> again from the top is a separate question, but I guess that squeezes past
> the RFC under the "retry in due time" part. ;-)

Unless you can provide actual evidence that this happened, I will
just ignore it as just another confused user.

        Wietse

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