Re: An approach for reducing mail loss with greylisting

At 08:49 AM 11/12/06, Gaal Yahas wrote:
>    How about failing the transaction at the very last moment, after
>    we get the whole message (assuming there's only one, which is by
>    far the most common case)? Then, if after X hours we don't see the
>    same UID again, we *do* deliver the refused message, but mark it as
>    X-Graylist-Status: Abandoned and leave it to procmail/spamassassn/MUA
>    to decide the implications.


This not even possible is some greylist implementations?  On OpenBSD, the 
packet filter decides if the message goes to spamd (greylisting) or mail 
(which could be on a separate box).  Once an ip address is whitelisted by 
spamd, further connections go directly to mail bypassing spamd.  I think 
implementing your suggestion would mean adding mail relay code into the 
spamd code.

Also, I've found greylisting an extremely effective filter for virii 
created email - haven't seen a single one since implementing 
greylist.  You're suggesting we accept all that garbage?