Spam etc (was Re: [oclug] How to catch privacy liars with Qmail)
dan at hld.ca
Tue Mar 5 12:18:41 EST 2002
But I've caught at least one spammer who didn't, so even if its easy
they didn't do it.
I'll have to check out spamassasin sometime, but I'd like to add one
other really effective tool called "Razor". It's a P2P anti spam tool,
where one user reports the email as spam, and all the other subscribers
don't have to get it. It hasn't gotten a good email yet, and it gets
about 50% or so of my spam.
Another good filter is to just check for some characters after a lot of
whitespace in the subject. Apparently, in some state it is a law to
format your subject like that if you are going to spam. Here is my
procmail rule to catch it:
* ^Subject:.* .*
| gzip >>spam.gz
On Tue, Mar 05, 2002 at 11:42:39AM -0500, David F. Skoll wrote:
> On Tue, 5 Mar 2002, Dan Cardamore wrote:
> > I've switched to qmail several months ago and started using a very
> > interesting anti-spam, anti-anti-privacy-policy feature. Qmail allows
> > you to receive any mail destined for $userid@$domain, it also lets you
> > recieve any email destined for $userid-$something@$domain.
> Sendmail has a similar feature: dfs+$anything at roaringpenguin.com gets
> to me. However, it doesn't take a rocket scientist to figure out what
> you're doing and strip the suffix.
> I have really aggressive anti-SPAM software. I use the ORBZ and ORDB
> open-relay blacklists, and SpamAssassin. This is highly effective;
> I get maybe one or two spams a week.
> oclug mailing list
> oclug at lists.oclug.on.ca
Dan Cardamore finger://email@example.com http://www.hld.ca
Q: Why did the tachyon cross the road?
A: Because it was on the other side.
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