Spam Filter ISP Forums : Dan S Keyword RegEx Update https://www.logsat.com/spamfilter/forums/ Mon, 13 Jul 2026 11:56:02 +0000 Tue, 30 Sep 2003 05:36:00 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.04 360 https://www.logsat.com/spamfilter/forums/RSS_post_feed.asp?TID=2070 <![CDATA[Spam Filter ISP Forums]]> https://www.logsat.com/spamfilter/forums/forum_images/web_wiz_forums.png https://www.logsat.com/spamfilter/forums/ <![CDATA[Dan S Keyword RegEx Update : Well ... I like your ideas but...]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=2070&PID=2098&title=dan-s-keyword-regex-update#2098 Author: Desperado
Subject: 2070
Posted: 30 September 2003 at 5:36am

Well ... I like your ideas but one thing is at the moment, we can't specify filters for the "Subject" only.  I will take a very serious look at your ideas and see if I can come up with a "Clean" RegEx or 2.

Dan S.

]]> Tue, 30 Sep 2003 05:36:00 +0000 https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=2070&PID=2098&title=dan-s-keyword-regex-update#2098 <![CDATA[Dan S Keyword RegEx Update : The messages that slip through...]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=2070&PID=2097&title=dan-s-keyword-regex-update#2097 Author: Guests
Subject: 2070
Posted: 30 September 2003 at 3:44am

The messages that slip through the filter now tend to be where the text has been broken up by a lot of comments, example:

(I'm leaving out the example this time, the forum truncated my previous message so trying to see if this works better - you will have to imagine a lot of nonsense comments)

..etcetera. This doesn't seem to be caught by your current RegEx although it to the human eye is very obvious junk (no matter what language you speak!). I'm not good at writing RegEx'es but have a few ideas - comments anyone?

1) Filter out on "nonsense" words in comments. Nonsense = 4 or more consecutive consonants.

2) Maybe change the above to 4 or more consecutive non-vowels (to filter out things like glk4zm2pq)

3) Same as 1) and 2) but for 3 or more consecutive vowels.

4) Same idea as all the above but applied only to the Subject of the email. This often contains nonsense words and I can see no good reason at all to allow them.

5) In all the above, maybe necessary to allow for more than 4 consonants (or 3 vowels) to get things like KPMG (for accountants) etc through but there should be some reasonable number, say 5-6 where the filter could kick in.

6) Filter out if number of chars in comments > number of non-comment chars, either over one single line or in the message as a whole. number of non-comment chars, either over one single line or in the message as a whole. number of non-comment chars, either over one single line or in the message as a whole.

7) Filter out if number of chars in comments are > X (in the message as a whole). X (in the message as a whole). X (in the message as a whole).

8) Filter out if any comments at all...

Well - can any of this be done in RegEx and would it create any problems?]]> Tue, 30 Sep 2003 03:44:00 +0000 https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=2070&PID=2097&title=dan-s-keyword-regex-update#2097 <![CDATA[Dan S Keyword RegEx Update : The messages that slip through...]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=2070&PID=2096&title=dan-s-keyword-regex-update#2096 Author: Guests
Subject: 2070
Posted: 30 September 2003 at 3:40am

The messages that slip through the filter now tend to be where the text has been broken up by a lot of comments, example:

mppa iofyydehhz pnz ojdjgnugps hk i-->er - uer - uer - up to 36 ho