[22288] in North American Network Operators' Group
Re: ** Forged spamming going on
daemon@ATHENA.MIT.EDU (Steven J. Sobol)
Mon Dec 21 16:04:51 1998
Date: Mon, 21 Dec 1998 14:15:22 -0500
From: "Steven J. Sobol" <sjsobol@nacs.net>
To: Robert Tarrall <tarrall@ecentral.com>
Cc: alex@nac.net, nanog@merit.edu
In-Reply-To: <199812211607.JAA04735@hades.ecentral.com>; from Robert Tarrall on Mon, Dec 21, 1998 at 09:07:29AM -0700
On Mon, Dec 21, 1998 at 09:07:29AM -0700, Robert Tarrall wrote:
> 4) Deny relaying, which sendmail 8.9.1a will do by default (has worked
> great for us so far), and
> 5) Deny access to dial-access.att.net (and dialsprint.net, da.uu.net,
> pub-ip.psi.net, etc) which is what we're doing here just because we
> get so much spam directly from such dialup accounts these days.
If it's a forgery and the mail is not touching NAC.NET servers, neither step
is useful, although relaying should be shut off and SMTP access denied from
ISP dialup banks as a general rule.
--
Steve Sobol [sjsobol@nacs.net]
Part-time Support Droid [support@nacs.net]
NACS Spaminator [abuse@nacs.net]
Proud resident of Cleveland Heights, Ohio, the coolest place on earth.
http://www.ClevelandHeights.com
