> > The "submissions" port, port 587, seems to be the right port for this - > > The problem with this is that if it becomes widely used and known, ISPs > will probably block that port, too, without thinking about it too much > (and not realizing that it is not really much of a spam threat).
Port 587 is only supposed to be open to authenticated users via pop-before-send or SMTP AUTH or the like. Just leaving it open is a dreadful idea. If you're going to set up an open relay, I agree that you should hide it on a random port, but it'd be better not to do it at all. Regards, John Levine, [EMAIL PROTECTED], Primary Perpetrator of "The Internet for Dummies", Information Superhighwayman wanna-be, http://iecc.com/johnl, Sewer Commissioner Finger for PGP key, f'print = 3A 5B D0 3F D9 A0 6A A4 2D AC 1E 9E A6 36 A3 47
