[52168] in North American Network Operators' Group
Re: How do you stop outgoing spam?
daemon@ATHENA.MIT.EDU (Dave Crocker)
Wed Sep 18 03:05:56 2002
Date: Wed, 18 Sep 2002 00:01:58 -0700
To: Barney Wolff <barney@tp.databus.com>
From: Dave Crocker <dhc2@dcrocker.net>
Cc: nanog@merit.edu
In-Reply-To: <20020918053348.GA59998@tp.databus.com>
Errors-To: owner-nanog-outgoing@merit.edu
At 01:33 AM 9/18/2002 -0400, Barney Wolff wrote:
> > 3. SMTPAUTH does not require an alternate port, yet it is sufficient for
> > ensuring accountability. Hence it is sufficient for dealing with the
> > reason that port 25 is blocked, without requiring that it be blocked.
>
>I don't understand this reasoning. The ISP's justification for blocking
>25 except to its own servers is to avoid having its facilities used
>for abuse. How would the local ISP enforce use of SMTPAUTH to connect
>to some remote ISP?
the claim is that outbound 25 is blocked to prevent spam. however
accessing a remote 25 with smtpauth ensures full accountability and,
therefore, prevents spam. blocking 25 disables use of this mechanism.
d/
----------
Dave Crocker <mailto:dave@tribalwise.com>
TribalWise, Inc. <http://www.tribalwise.com>
tel +1.408.246.8253; fax +1.408.850.1850
