>>> So having a delay of 2-5 seconds before the HELO answer helps
you identify the spam sending hosts.
And doing then what?
block, or add a score to the PB if the sending host keeps
transmitting and
does not respect the delay time. Delayed helo is a standard feature
of many
respected MTA. Maybe not effective as graylisting or surbl, but
nothing
exotic.
Correct, i used qsmtpd before, which has this option, when a mailer
doesn't respect the delay (which most of the spam mailer don't) the
connection will be terminated, great stuff, which looses already a
lot of crap! When he respects the delay it is taking the spammailer
to long, so they are mostly getting away!
Grtz, Pascal!
-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys - and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
Assp-user mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/assp-user
