Re: [Exim] lowest MX record - strange situation

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Autor: Nigel Metheringham
Datum:  
To: dimitry
CC: exim-users
Betreff: Re: [Exim] lowest MX record - strange situation
gw-exim@??? said:
> But I think if all lowest relays are down and the Exim-host sees
> itself as "first-alive-relay" it have to try deliver to lowest MX
> relays time to time by the MX-list.


> >That is silly. Why try mail.123.com twice?


> Please see above.


That makes no sense whatsoever. Just put an appropriately quick retry
rule on mail.123.com - you aren't going to normally find it fails once
and then immediately works unless you have a broken network, and
patching application s/w is not the right way to deal with that.

An alternative approach might be to tie multiple IP addresses to
mail.123.com - exim will try all of those.

Anyhow, the MX specs say that exim *must* not deliver to
>> >> 123.com preference = 20, mail exchanger = mail.123.com


if the current host is
>> >> 123.com preference = 20, mail exchanger = relay.mydomain.com


since bouncing mail between equally prefered MXes is a mail loop and a
bad thing(tm).

    Nigel.
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[ Nigel Metheringham                  Nigel.Metheringham@??? ]
[ Phone: +44 1423 850000                         Fax +44 1423 858866 ]