Milter-greylist

Emmanuel Dreyfus wrote:
> On Wed, Oct 12, 2005 at 06:26:54PM -0400, Matt Kettler wrote:
> 
>>>I assume you cannot configure sendmail to reject mail sent to nonexistent
>>>usrers. Maybe milter-rcptfilter can fix your problem? You feed it with the
>>>list of the valid addresses and it will reject everything else.
>>
>>My sendmail *does* reject nonexistent senders, and always has. re-read my
>>message. The rejection happens *AFTER* the greylist runs.
> 
> 
> Ok, let me rephrase:
> 
> I assume you cannot configure sendmail to reject mail sent to nonexistent
> users before milter-greylist runs. Maybe milter-rcptfilter can fix your 
> problem? You feed it with the list of the valid addresses and it will 
> reject everything else.

Call me crazy, but it seems rather odd to add a milter to re-implement
functionality that's already built into sendmail. Actually, IMHO it's not just
odd, it's downright stupid.

milter-rcptfilter is for people who don't have user accounts on the local
mailserver and are relaying their mail. I DO have accounts on the server. It's
just that sendmail calls milter-greylist before doing the recipient checks.

However, when it all boils down, this is not a problem for me. I mitigate
dictionary attacks, so they don't flood my greylist.

This is really only a problem for "normal" sendmail users. ie: those who don't
relay, have local accounts, and don't mitigate dictionary attacks.