I'm not sure about your specific question, but won't doing a DNS lookup 
for every incoming email cause a big performance hit?  Just curious - 
I'm trying to learn more about mail systems myself.

alex

Jim B wrote:

> How can postfix be configured so that postfix will do a reverse dns on 
> incoming mail and if it fails then the mail will not be accepted or 
> will be discarded?
>
>
> Jim
>
>
>
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