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Re: No MX record. Postfix not trying A record
From: Wietse Venema (wietse
porcupine.org)
Date: Thu Feb 02 2006 - 07:57:40 CST
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Ralf Hildebrandt:
> Specify "ignore_mx_lookup_error = yes" to force a DNS A record lookup
> instead. This violates the SMTP standard and can result in
> mis-delivery of mail.
>
> -> how likely is this?
Don't implement error recovery with a lottery. If you don't know
if a site has an MX record, then you may mis-deliver mail.
Email works reliably even though the system is built from a large
number of componenents with non-zero error rates. It achieves
reliability not by resolving errors with lotteries; if we were to
do that, the overall error rate would increase with the number of
components, and we would never have a reliable system.
Wietse
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