On Mon, Mar 29, 2010 at 09:34:56PM +0200, Josep M. wrote: > Hello. > > One spammer has tried about 300 times send me email, always from the > same address, but from about 20 different IP . Never pass verify sender, > always get 450 error....my question is...when one email fail postfix > verify_sender 4 or 5 times..will be possible auto-blacklist this email > for one week, for example? > > I use postfix 2.6.5 and postgrey 1.32 > > > Thanks > Josep >
Wouldn't that open you up to a DoS attack vector against valid E-mail addresses sending to you? Cheers, Ken
