North American Network Operators Group

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Re: Why do so few mail providers support Port 587?

  • From: Adrian Chadd
  • Date: Tue Feb 15 21:25:12 2005

On Wed, Feb 16, 2005, Thor Lancelot Simon wrote:

> Similarly, what harm, exactly, do you see to allowing authenticated
> mail submission on port 25?

because then you can filter port 25 access to anywhere except your
local mailserver, like we do here on campus, and suggest to people
they use a VPN or Authenticated SMTP to port 587 to their ISP or
company when they wish to use an external mail server.

Quite useful when it works (read: the other party has implemented
AUTH-SMTP on port 587).


Adrian Chadd			"You don't have a TV? Then what's
<[email protected]>	    all your furniture pointing at?"