2012/10/5 Jim Wright <j...@wrightthisway.com>
> On Oct 5, 2012, at 12:41 PM, Alumno Etsii wrote: > > > Hi! > > > > I've been looking for techniques to avoid SpamBot connections to the > SMTP server (or at least to limit them or identify them easily). One of > them was the 'Delayed greeting (220) procedure', as a big number of > spambots start sending commands just after connecting, so this technique > considers delaying the 220 greeting message after connection. My questions > are: > > > > 1) Does Postfix implements this? If so, what parameters are related to > this? (I'm trying to find something but I didn't see anything) > > 2) Is this worth it? I mean, should this technique be used by default or > only under 'stressing' situations? > > Here's what you're looking for: > http://www.postfix.org/POSTSCREEN_README.html > > > Exactly that! Thanks so much!
