Re: exim4 e il campo MX dns

Il 22/08/2014 23:59, Davide D'Amico ha scritto:
> Q0311:  When a DNS lookup for MX records fails to complete, why 
> doesn't Exim send the messsage to the host defined by the A record?
>
> A0311:  The RFCs are quite clear on this. Only if it is known that 
> there are no MX records is an MTA allowed to make use of the A record. 
> When an MX lookup fails to complete, Exim does not know whether there 
> are any MX records or not. There seem to be some name servers (or some 
> configurations of some name servers) that give a “server fail” error 
> when asked for a non-existent MX record. Exim uses standard resolver 
> calls, which unfortunately do not distinguish between this case and a 
> timeout, so all Exim can do is try again later.


Ti ringrazio, risposta a tempo di record e molto esaustiva.
A quale RFC si riferisce ?
Dove posso trovare l'intero file delle FAQ ?

Grazie molto gentile.

Giovanni

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