On Sat, Apr 24, 2004 at 11:18:34AM -0500, Edgar Lovecraft wrote:
> Practically no one blocks TCP 587 (SMTP Submission), that port along with
> SMTP-AUTH was designed just for this. Just set up exim to listen on both
> port 25 and 587, and have all of your users set there smtp port for
> outgoing email to 587. Why does no one use this?? Also, if you find that
> users cannot get to tcp 587 then setup a third arbitrary port 2525? that
> they should be able to get to. My point being, choose an alternative port
> that your users use ALL the time so that they do not have to change
> settings depending on where they are.
In particular, it is important to make sure that you can't deliver arbitrary
incoming mail on port 587, but that it can only be used for a mail transaction
once some form of authentication has taken place, or spammers will just start
using that, and we'll be back to where we started. :-/
MBM
--
Matthew Byng-Maddick <mbm@???> http://colondot.net/
(Please use this address to reply)
