configure postfix to do reverse dns and do not accept mail if revers dns fails

[Jim B]

Currently the mail gateway has plenty of resources and if the mail takes a 
few seconds longer but it helps to get rid of some potential spam that would 
be fine with me.


Jim

On 8/17/05, Alex Dean <alex at crackpot.org> wrote:
> 
> 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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