I'm not familiar with this test? -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Matthew Bramble Sent: Wednesday, September 10, 2003 10:27 PM To: [EMAIL PROTECTED] Subject: Re: [Declude.JunkMail] Strange Subject
Add the following tests and it get's even better :) SUBSPACE-10 subjectspaces 10 x 1 0 SUBSPACE-20 subjectspaces 20 x 2 0 SUBSPACE-30 subjectspaces 30 x 3 0 Matt Dan Patnode wrote: >I did a scan of all uncaught spam from the last week, found all the one's with Q, removed the QU's and ended up with this list. All of these would have been seen by Matt's new config: > > >Subject: Block those unwanted Popups yqvqk >Subject: drive luxury cars and get paid 9xP%oY5NzPG\q2G >Subject: drive luxury cars and get paid L0z[7J4aYq!F7P1 >Subject: drive luxury cars and get paid 9xP%oY5NzPG\q2G >Subject: drive luxury cars and get paid L0z[7J4aYq!F7P1 >Subject: FW: Block those unwanted Popups yqvqk >Subject: FW: drive luxury cars and get paid 9xP%oY5NzPG\q2G >Subject: FW: drive luxury cars and get paid L0z[7J4aYq!F7P1 >Subject: FW: get that extra boost in the bed uvqtc qqyixu >Subject: FW: new mail REgnfqnKQT >Subject: Fw: :( would u mind if i .. jqvmoiqfkzkokdwns u >Subject: get that extra boost in the bed uvqtc qqyixu >Subject: get that extra boost in the bed uvqtc qqyixu >Subject: Re: new mail REgnfqnKQT >Subject: Re: new mail REgnfqnKQT >Subject: Stop messages SPAM po p vyoaejswayqo >Subject: [Fwd: =?GB2312?B?0OnE4r/VvOS089PFu92jrDE5OdSqv8nS1L2o0ru49s341b6jrA==?==?GB231 2?B?uM+/7LW9d3d3LjA3NTVzei5jb23J6sfrsMld?= > > >Dan > > > > >On Wednesday, September 10, 2003 17:45, Matthew Bramble <[EMAIL PROTECTED]> wrote: > > >>How about 4 different super tests? I fail automatically on >>=?ISO-8859-1?B?, and that accounts for more than 1% of the >>E-mail coming in to my server, but only a handful of additional >>catches in what was being missed...no false positives. I think >>I've mentioned enough times, the other tests that I would like >>to have...a BODYTEXT filter that searches just a decoded >>non-HTML body, a NOTEXT test for nothing but spaces and returns >>and attachments (that's a key) after decoding and >>de-HTMLifying, and a TEXTCOUNT marquee test that would allow >>you to search for amounts of non-HTML decoded body text just >>just like SUBECTSPACES and BCC, but in reverse (the less there >>is, the higher the score). I could catch so much crap with >>those 40 or so two character gibberish strings, in fact I think >>it was properly tagging around 10% to 20% of all unique >>incoming messages today if not more. That gibberish subject >>filter is tagging over 5% by itself, and with perfect accuracy >>so far. A functional gibberish body filter though would have a >>reasonable number of false positives (was tagging buy.com links >>that were shown in displayable text for instance). I don't of >>course though expect Scott to rush to my aid here. >> >>I have managed to add though tests for SUBECTSPACES (very >>effective), COMMENTS (effective) and BCC (just ok), along with >>some small key word/phrase filters for the body, subject and >>sender with very good success. I only saw about 5 definitive >>false positives today out of around 3000 unique messages, but >>approximately 150 pieces of spam got through. I think that >>could be reduced by as much as half without a measurable impact >>on the false positives. If that doesn't work, I'm buying a gun >>:) >> >>BTW, on Linux, my guru buddy recommends Postfix as the SMTP >>client and Webmin as the interface. I don't though dispute >>Sandy's faith in MS SMTP, and it can be run on the same box as >>IMail. >> >>Matt >> >> >> >> >>Dan Patnode wrote: >> >>FYI, I pulled this test 3 weeks ago after a email from France >>came through (or rather didn't) with this subject: >> >>Subject: >>=?ISO-8859-1?B?RW5qb3kgc3VtbWVyIHVudGlsIGl0cyB2ZXJ5IGVuZCE=?= >> >>There's definitely is a correlation here among spammers, ?B? >>encoded subjects, disposable domain names, and nothing else in >>the body of the message. There has to be a way to bring the 2 >>or 3 variables togther as a super test. >> >> >>Dan >> >> >>On Monday, September 8, 2003 19:05, Matthew Bramble <[EMAIL PROTECTED]> wrote: >> >> >>Use a text filter and add something like: >> >>SUBJECT 40 CONTAINS =?ISO-8859-1?b? >> >>to it. >> >>I tried this all the way down to ust ?b? and a SUBJECT filter >>didn't catch it. The SUBJECT filter also doesn't catch the >>decoded text. >> >>I found though that if you use the HEADERS filter, it will >>catch this (customize to suit, this will only catch Latin-1 >>that is base64 encoded, and I can't think of why that would be >>necessary, I would think that only other charactersets could >>need this): >> >> HEADERS 10 CONTAINS ISO-8859-1?B? >> >>Neither the HEADERS filter nor the SUBJECT filter is catching >>the decoded form of the text. The BASE64 test is also not >>catching this if it's only in the Subject of the message (I >>assume it only does the body/attachments). >> >>The not so funny thing is that I'm getting this now as a part >>of those E-mails containing no displayable text. This guy is >>real good at getting through my settings unless he chooses a >>bad IP to send from. I think a few days ago, another person on >>this list commented about this same spammer, bringing up the >>domains that he is using (common words followed by numbers). >>The only pattern this guys leaves apart from having no text in >>the body, is having different country's TLDs listed in the >>Received line, the sender, and the reverse DNS. Here's a copy >>of what I just received using this technique (with links >>modified): >> >> >> >> >>>From - Mon Sep 08 17:36:44 2003 >> >> >>X-UIDL: 314612976 >>X-Mozilla-Status: 0011 >>X-Mozilla-Status2: 00000000 >>Received: from gjr.paknet.com.pk [81.128.130.33] by igaia.com with ESMTP >>(SMTPD32-7.13) id A6244F101D8; Mon, 08 Sep 2003 17:35:32 -0400 >>Date: Mon, 08 Sep 2003 21:35:35 +0000 >>Message-ID: <[EMAIL PROTECTED]> >>X-Mailer: Windows Eudora Pro Version 2.2 (32) >>To: [EMAIL PROTECTED] >>Subject: >>=?ISO-8859-1?B?UmU6T3JkZXIgU2lsZGVuYWZpbCBDaXRyYXRlICBmcm9tIGhvbWUgLSB ubyBkb2N0b3IgcmVxdWlyZWQu?= >>MIME-Version: 1.0 >>From: "Shirley Dalton" <[EMAIL PROTECTED]> >>Content-Type: text/html >>Content-Transfer-Encoding: 8bit >>X-Declude-Sender: [EMAIL PROTECTED] [81.128.130.33] >>X-Declude-Spoolname: Df62404f101d89e2c.SMD >>X-Note: This E-mail was scanned by iGaia Incorporated's E-mail >>service (www.igaia.com) for spam. >>X-Note: This E-mail was sent from >>host81-128-130-33.in-addr.btopenworld.com ([81.128.130.33]). >>X-Spam-Tests-Failed: DSN, IPNOTINMX, NOLEGITCONTENT [1] >>X-RCPT-TO: <[EMAIL PROTECTED]> >>Status: U >>X-UIDL: 314612976 >> >><html><body> >><center><!--lfoln42j66--><a >>href="http://www-dot-payment33dd-dot-com/host/default.asp?ID=omni";><im g >>src="http://discountrate2-dot-com/pics/gv1.gif"; height="270" width="405"></a></center> >></html></body> >> >> --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] --- This E-mail came from the Declude.JunkMail mailing list. 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