RE: [Exim] ACL Spam Rejection Tricks

> -----Original Message-----
> From: jonathan vanasco [mailto:jvanasco@mastersofbranding.com]

> I haven't done this yet -- but looking at my logs, if i could
> blacklist an IP for sending to 3+ dead addresses in a row,
> i'd cut down
> on 98% of my spam

I don't do that, but I do cause a 60 second penalty delay for every invalid
recipient. "Real" mailers don't seem to mind (the RFC specifies a longer
timeout for this) but dictionary spammers seem to give up after a couple of
iterations.