[Dovecot] How to deal with mail to unknown virtual recipients?

[Andreas Ntaflos]

On Friday 18 April 2008 18:56:08 Charles Marcus wrote:
> On 4/18/2008, Andreas Ntaflos (daff at pseudoterminal.org) wrote:
> > Is there anything Dovecot itself can do to reject or handle mail to
> > invalid virtual users?
>
> Not directly - the solution, as you surmised, earlier, is to use the
> same db backend for your users.
>
> > Or does this situation *have* to be dealt with
> > earlier, by the MTA?
>
> Yes, it *must* be done at the MTA, otherwise you accept-then-bounce,
> which makes you a backscatter source, and will quickly get you
> blacklisted...

Charles, Ed, 

thank you very much for your insightful replies.

Andreas
-- 
Andreas "daff" Ntaflos
Vienna, Austria

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