On Wed, 26 Sep 2007, Liviu Daia wrote: > Greylisting is trivial to bypass, with or without a queue: just send > the same messages twice. Some spammers have figured that out long ago. > Ever wondered why sometimes you receive 2 or 3 copies of the same spam, > from the same IP, with the same Message-Id etc., a few minutes apart?
That doesn't work, at least not against spamd.
