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Thread: Not just SpamAssasin
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03-18-2004, 10:47 AM #1Web Hosting Evangelist
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Not just SpamAssasin
Hello,
Recently more and more spam is getting through spamassasin for me, not sure if this is the case for all. I find MailScanner and ClamAV have been working overitme lately, but I am curious if there is more I can do...
A friend pointed me to this blog:
http://www.nelson.monkey.org/~nelson...pamTuneup.html
It talks about two similarly named spam blocking programs:
Pyzor:
http://pyzor.sourceforge.net/
and
Razor:
http://razor.sourceforge.net/
I am curious if anyone has had any experience with these, I am debating trying these, may test them out on testing server and such...
Thanks for any stories, feedback, ideas, tips or suggestions
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03-18-2004, 11:06 AM #2WHT Addict
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We use Spam Assassin with Razor and a few other tweaks , I believe. It blocks nearly 2000+ E-Mails a day from our office environment. I can get you a tutorial as well, I believe on how you can set it up.
Kosta
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03-18-2004, 11:09 AM #3Web Hosting Evangelist
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If you have a nice tutorial link, please by all means do share So you see no conficts with razor and spamassasin? That is nice
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03-18-2004, 11:23 AM #4Junior Guru Wannabe
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Spammers are getting smarter, im getting more spam every day that comes thru spamassassin. And i cant block it without blocking legitimate emails.
MailScanner and ClamAV are doing a great job, it has blocked every single virus that hit my mail server. about 200+ a day
Im very interested in this too, please share the tutorial with us.
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03-18-2004, 11:45 AM #5WHT Addict
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Will do. I just can't post it until I get home in a few hours.
Kosta
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03-18-2004, 12:00 PM #6Web Hosting Evangelist
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Thanks Kosta
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03-18-2004, 12:05 PM #7WHT Addict
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I even wrote a front end to control white / black lists, and options for it to be used with Exchange for our office .. eventually I need to make one for *nix boxes =] .
No problem.
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03-18-2004, 12:08 PM #8Web Hosting Master
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Whatever you do, NEVER EVER USE SPEWS
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03-18-2004, 02:05 PM #9Junior Guru
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Hostito,
Glad to see your post and see that it's not just me. For the past few weeks, more and more spam has been getting through :-(. And I always though spammers were morons, but apparently they're smart enough to figure out how to get around SA.
I've read a little bit about Razor and Pyzor... might look into them. Also considered TDMA, but that may be difficult to manage as well. Thoughts?
Thanks,
RussSitelutions: www.sitelutions.com -- Reliable Hosting, Low-Cost Domains, Dynamic DNS
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03-18-2004, 02:58 PM #10Web Hosting Evangelist
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TDMA seems to irritate folks as a lot of folks don't like to have to reply and such. I loved it, but everyone else hated it
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03-18-2004, 03:07 PM #11Junior Guru
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Oops, I think we both confused it with the cell phone standard "TDMA"... but it's actually "TMDA." My mistake too :-).
Yeah, I've never actually tried it with my primary e-mail address. I like the idea of it though, because it should basically eliminate all spam. It may be nice to use SpamAssassin as a first line of defense, then TMDA. This way mail that gets through SA could be put into the "unreviewed" TMDA folder.
One of my main problems with TMDA is that it may cause me to miss automated messages sent by companies / sites that I deal with. If I had to review messages that weren't let through, I'd see hundreds of spam messages and maybe a few valid ones. It may be hard to pick out the valid ones.
Opinions?Sitelutions: www.sitelutions.com -- Reliable Hosting, Low-Cost Domains, Dynamic DNS
IFlex Data Center.: FlexData.Center
Northern Virginia & Washington DC Area Data Center Colocation
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03-18-2004, 03:28 PM #12Web Hosting Evangelist
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Ha, you are right
Found this:
http://www.flakshack.com/anti-spam/
Has some interesting stuff...
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03-18-2004, 03:50 PM #13Web Hosting Master
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We've seen a huge increase in spam in the past month. In studying the spams, they appear to have come up with some method of disguising the text, yet making it readable to the user.
It's quite astonishing, really. I've been trying to wrap my head around how it's done. The text looks normal, but when you copy/paste it somewhere else, it's p3n10s enl3rgm3/nt instead of real words. I can't figure out how the heck they did it...
We introduced some of the more traditional blacklists like spamhaus and ordb into the mix. That has cut things way down and doesn't really touch legitimate email. Another that we are testing is list.dsbl.org, but I'm not sure whether that's going to have SPEWS-like problems with blocking legit stuff.
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03-18-2004, 04:48 PM #14Web Hosting Master
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Andrew: It's a method called obfuscation.
Apocalypse: Spammers are alot smarter then you think. They have most of these free open source engines. Basically testing before sending. Not all are as technical, but you do have the very intelligent, playing on the other team.
MailScanner has the ability for plug-ins. I think you can add different AS engines as you can add AV engines.Last edited by datums; 03-18-2004 at 04:53 PM.
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03-18-2004, 04:58 PM #15Web Hosting Evangelist
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speaking of the apocalypse and email...
http://www.informationweek.com/story...cleID=18400822
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03-18-2004, 07:57 PM #16Web Hosting Master
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Originally posted by datums
Andrew: It's a method called obfuscation.