Okay, I think I was mistaken about lack of base64 decoding being the problem.
Does SpamAssassin recurse over subparts in multipart messages? It appears that for multipart messages of the form: Headers (Content Type: multipart/alternative;) | ---Part 1 (plain text) (blank) | ---Part 2 (base64 encoded HTML) (encoded content) Part 2 is not being processed as part of the message body. Am I missing something? On 28 Jan 2002 at 16:09, Nels Lindquist wrote: > I'm new to the SpamAssassin world, so I hope this issue hasn't been > discussed to death already. > > SpamAssassin first come to my attention on the MIMEDefang mailing > list when SA integration was added to 'Fang. I've been playing with > it for a little while now, and I've been very pleased with the > results. > > However, I noticed that a few messages which were clearly spam were > sneaking through just under the threshold. It wasn't immediately > obvious why this should be since the messages had all the hallmarks > of blatant spam which typically gets quite a high score. > > I determined that the messages in question had their bodies base64 > encoded. It would appear that SpamAssassin isn't decoding the base64 > strings prior to doing its analysis. > > Since I'd been in the habit of manually decoding such messages so > that I could report them via SpamCop, I did some testing. > > I took one of the messages which had scored 4.2 (threshold is the > default 5.0), manually decoded the base64 string, and built a message > using the same headers and the decoded message body. > > Using the commandline version of SA 2.01, I checked the decoded > message and the score jumped to 19.1. Checking with SA 1.5 on a > different machine, the score was 25. > > I had similar results with other messages. Some of them weren't as > dramatic, but nearly all of the scores were bumped over the spam > threshold due to hits from the decoded message body. > > Has anyone considered adding base64 decoding functionality to > SpamAssassin in order to improve its accuracy on such messages? ---- Nels Lindquist <*> Information Systems Manager Morningstar Air Express Inc. _______________________________________________ Spamassassin-talk mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/spamassassin-talk
