North American Network Operators Group
Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Re: How do you stop outgoing spam?

  • From: Dave Crocker
  • Date: Wed Sep 18 03:07:40 2002 
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:[email protected]>
TribalWise, Inc. <http://www.tribalwise.com>
tel +1.408.246.8253; fax +1.408.850.1850