Greylisting Considerations

[Martin McWhorter]

I am running spamassassin (2.63 soon to be upgraded to 3.0) on a linux 
machine with the spamass-milter, sendmail and clamav/clamav-milter.

This machine is the border gateway for all incoming email. All mail is 
then forwarded to a server that houses the IMAP mailboxes.

I am considering implementing greylisting and am curious on which of 
the many implementations users with similar setups (incoming 
border-gateway/sendmail) as mine.

Martin