mx selection order

Matus UHLAR - fantomas uhlar at
Tue Feb 22 14:17:17 UTC 2011

On 22.02.11 20:29, Terry. wrote:
> Given I have these MX records:
>        3600    IN      MX      10
>        3600    IN      MX      10
>        3600    IN      MX      20
> My question is, when is failed to communicate with, the
> remote MTA will continue to talk to m2 or m3?

It seems that RFC5321 orders to try SMTP servers with lowest priority first,
but allows limiting or disabling this feature for specific installations.

Matus UHLAR - fantomas, uhlar at ;
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