[Mimedefang] Blocking Dictionary Attacks

[David F. Skoll]

afo cliff wrote:

> Yes thanks, I tried that, the down side for me is that it sends a
> "User Unknown" reject notification, which I'm trying to avoid.  I
> don't want my server to waste time sending 10,000 rejects to a zombie
> somewhere.

???

It doesn't send a notification.  All it does is reply with a 5xx SMTP
reply code.

It's very rude to bit-bucket mail to nonexistent recipients; valid senders
might never know that their mail has bounced.

Regards,

David.