Date: Sat, 7 Jan 2006 09:35:11 -0800 (PST) From: Danial Thom <danial_thom@yahoo.com> To: Robert Slade <bsd@bathnetworks.com>, David Banning <davidernest@gmail.com> Cc: questions@freebsd.org Subject: Re: Spamcop listed - need help to diagnose why Message-ID: <20060107173511.51696.qmail@web33302.mail.mud.yahoo.com> In-Reply-To: <1136618623.15229.17.camel@lmail.bathnetworks.co.uk>
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--- Robert Slade <bsd@bathnetworks.com> wrote: > On Sat, 2006-01-07 at 05:45, David Banning > wrote: > > My server just was listed with Spamcop. > Before I exercise my -one time- > > option to de-list it I need to verify that > indeed my server is not sending > > spam. I have 3 win boxes routing through my > FreeBSD box. > > > > Also there are a few windows computers in the > outside world that send > > mail through my server via port 26 using > their login and password. > > > > I know it is possible for viruses to install > a stand-alone smtp server > > on win boxes. That is one suspicion I have. > > > > My question; > > What tool would I use to see if unauthorized > mail is being sent via > > my server? Note that I am running tmda, so > that I have around 80 emails per > > minute being sent out; to request > verification on my standard incoming > > mail, (therefore it is too complicated to > just watch -all- mail being > > sent out, and try and decode legitimate from > illegitimate). > > There is your problem TMDA is most likely the > cause. Such programmes are > in effect adding to the spam problem. Nearly > all spam has a forged from > address and all programmes such as TMDA do is > send a challenge to an > innocent 3rd party. Whist it looks like it > reduces your spam all you do > is in effect spam someone else. When your > e-mail address has been used > in a spam run by a spammer and you start > getting 10s of these challenge > an hour it is quite easy to report 1 my > accident. If you look at the > Spamcop reporting page you will see a warning > about just this situation. > > I suppose that the real answer is to stop > compounding the spam problem > and use a combination of spamassassin and block > lists. > > BTW I make it a point never to respond to > challenges. > > Rob Consider being "listed" a privilege; half the universities in the world are listed as spammers. Anyone who uses those stupid, anal-retentive services deserves to miss getting important mail. DT __________________________________________ Yahoo! DSL – Something to write home about. Just $16.99/mo. or less. dsl.yahoo.com
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