[Mimedefang] Greylisting

[David F. Skoll]

Steffen Kaiser wrote:
> 
>> help a small company server. Perhaps a distributed greylist DB? Sort
>> of like a DNSBL but with white-listing. MD could store the successful
>> entries in a zone and we could publish our zones for others to use.

> OK, how to keep the "Bad Guys" out?
> You're required to build up a trust system, then.

That's not any more or less troublesome than traditional RBLs.  In
theory, anyone can poison a traditional DNSRBL, but in practice, some
DNSRBLs are still very useful.

Regards,

David.