Milter-greylist

Emmanuel Dreyfus wrote:
> On Tue, Jul 04, 2006 at 03:09:23PM +0300, Fredrik Nyberg wrote:
>>> I thought about this one, but there is a problem: you cannot take for
>>> granted that the remote site MX is also the source SMTP server.
>> No, you would have to accept for _any_ remote IP (*, recipient, sender).
>  
> Don't you fear that would make spammers life really easier?

Evan Harris proof-of-concept implementation relaydelay
(http://projects.puremagic.com/greylisting/), from which I switched to
milter-greylist from, has this feature. It did not seem to let a lot of
spam through, but surely some will slip in. My users are more concerned
about getting mail late or not at all due to braindead MTA's out there
than about if they get an occasional spam.

Cheers,
Fredrik Nyberg