nanog mailing list archives
Re: ** Forged spamming going on
From: alex () nac net
Date: Mon, 21 Dec 1998 11:23:33 -0500 (EST)
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
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 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 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
Current thread:
- ** Forged spamming going on alex (Dec 20)
- Re: ** Forged spamming going on Derek Balling (Dec 20)
- Re: ** Forged spamming going on Steven J. Sobol (Dec 21)
- Re: ** Forged spamming going on Phil Howard (Dec 21)
- <Possible follow-ups>
- Re: ** Forged spamming going on Robert Tarrall (Dec 21)
- Re: ** Forged spamming going on alex (Dec 21)
- Re: ** Forged spamming going on Stephen Stuart (Dec 21)
- Re: ** Forged spamming going on Steven J. Sobol (Dec 21)
- Re: ** Forged spamming going on Jon Lewis (Dec 21)
- Re: ** Forged spamming going on alex (Dec 21)
- Re: ** Forged spamming going on Robert Tarrall (Dec 21)
- List of dialups (was Re: ** Forged spamming going on) J.D. Falk (Dec 21)
- Re: ** Forged spamming going on Dean Anderson (Dec 21)
- Re: ** Forged spamming going on J.D. Falk (Dec 21)
- Re: ** Forged spamming going on Steven J. Sobol (Dec 21)
- Re: ** Forged spamming going on Paul Vixie (Dec 21)
- Re: ** Forged spamming going on Dean Anderson (Dec 21)
(Thread continues...)
- Re: ** Forged spamming going on Derek Balling (Dec 20)