On Thu, May 29, 2003 at 07:34:28AM +0200, Sven Luther wrote: >On Thu, May 29, 2003 at 12:00:22AM -0400, Mike A. Harris wrote: >> On Wed, 28 May 2003, Sven Luther wrote: >> >> >> > I was being sarcastic, his message was encoded with koi8-r, which, along >> >> > with being html, is one of the indescriminate reasons people block email >> >> > (and get a good number of false positives) >> >> >> >> however, foreign language encoding is separate from html email. >> >> >> >> blocking based on foreign language encodings is not such a good idea. >> >> blocking html is not so bad, though. >> > >> >You need to block multi-part mails with only one html part too though, >> >which is not so easy to do, i think. >> >> This filter doesn't catch *everything*, but for the last 6 years >> or so, it has had zero false positives for me while subscribed to >> limitless numbers of mailing lists. >> >> :0: >> * ^Content-Type:.*text/html >> HTML > >Yep, i have this too, but half the html spam i get pass trough this, and >because it is : > >Content-Type: multipart/alternative; > boundary="E_BBFDE6F0B.95CA_CC.D7." >... >This is a multi-part message in MIME format. > >--E_BBFDE6F0B.95CA_CC.D7. >Content-Type: text/html >Content-Transfer-Encoding: quoted-printable >... >--E_BBFDE6F0B.95CA_CC.D7.-- > >On the other hand i don't want to catch the emails which have a text and >an html section, since they are mostly valid ones.
The XFree86 mailing list filtering checks for a few different types of html-only messages, including a few levels deep of nesting (which I've seen in some spam). It does catch the occasional false-positive, but it's fairly rare, and a reasonable tradeoff given its effectiveness. >Anyway, i have almost managed to write a sed script doing this, but i am >not sure if it is possible to get the value of the boundary and match on >it in the address pattern when using sed. If you're prepared to use perl, there are packages for breaking out the mime structure. David -- David Dawes Founder/committer/developer The XFree86 Project www.XFree86.org/~dawes ------------------------------------------------------- This SF.net email is sponsored by: eBay Get office equipment for less on eBay! http://adfarm.mediaplex.com/ad/ck/711-11697-6916-5 _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
