[21041] in North American Network Operators' Group
Re: Despamming wholesale dialup
daemon@ATHENA.MIT.EDU (Terence)
Mon Nov 2 15:33:06 1998
Date: Mon, 2 Nov 1998 21:26:09 +1000 (EST)
From: Terence <terry@tdce.com.au>
To: nanog@merit.edu
In-Reply-To: <Pine.BSF.3.96.981030090634.15497B-100000@emu.capnet.state.tx.us>
> Block port 25 (only) from all "open modem banks" (TM) to my SMTP servers.
> If implemented on a large enough scale, the modem user will be
> 'encouraged' to use the SMTP server supplied with their account. Make each
> dialup customer go through, and be authenticated by their own SMTP server.
How about putting a port 25 redirect on your modem bank? (Catch it coming in,
send to your sendmail machine, reject stupid to: lines and idiotic from:
lines, etc, etc. Maybe tag the email with an ident from your own system, and
make spam tracking real easy...)
Once many isp's stop their users from using other people's resources for
spam, then maybe the practise will cease?
TERRY
