On 17-Aug-2009, at 03:25, Martijn de Munnik wrote:
The 450 error triggers the spammer to retry sending the mail.
In point of fact, if it is a spammer sending you the mail, a 450 error is often enough to dissuade them. This is the principle behind greylisting.
However, if these are real mailservers then yes, they will properly and correctly, resend the message.
First off, I would implement hello checks and just outright reject connections form "homepc" or any similar BS.
-- Say, give it up, give it up, television's taking its toll That's enough, that's enough, gimme the remote control I been nice, I been good, please don't do this to me Turn it off, turn it off, I don't want to have to see
