[22276] in North American Network Operators' Group
Re: ** Forged spamming going on
daemon@ATHENA.MIT.EDU (alex@nac.net)
Mon Dec 21 12:06:31 1998
From: alex@nac.net
Date: Mon, 21 Dec 1998 11:23:33 -0500 (EST)
To: Robert Tarrall <tarrall@ecentral.com>
Cc: nanog@merit.edu
In-Reply-To: <199812211607.JAA04735@hades.ecentral.com>
On Mon, 21 Dec 1998, Robert Tarrall wrote:
> alex@nac.net wrote:
> -> some luser off of AT&T DIalup is using mailme.com (my domain) for relaying
> -> mail:
> You forgot:
>
> 4) Deny relaying, which sendmail 8.9.1a will do by default (has worked
> great for us so far), and
You didn't read the email thoroughly.
A user dialed into ATT, sent thousands of emails to aol.com users, with a
forged return-address of youarecool@mailme.com, which AOL bounces back to
youarecool@mailme.com, which is a domain I own.
Relaying on my machines has no bearing on this.
> 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.
Still wouldn't fix it, as AOL is the one sending me the mails (bounces).
>
> Anyone have a list of legitimate outgoing SMTP servers for the big dialup
> companies (UUnet, PSI, Concentric, AT&T, Sprint, etc)? So far I haven't had
> any complaints about blocking stuff like da.uu.net, but I'd like to make sure
> that legitimate email can still get through.
>
That still wouldn't fix this problem, but I may do this seperately.
> -Robert Tarrall.-
> System/Network Admin
> E Central
>
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Atheism is a non-prophet organization. I route, therefore I am.
Alex Rubenstein, alex@nac.net, KC2BUO, ISP/C Charter Member
Father of the Network and Head Bottle-Washer
Net Access Corporation, 9 Mt. Pleasant Tpk., Denville, NJ 07834
Don't choose a spineless ISP; we have more backbone! http://www.nac.net
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