On Fri, 2007-01-26 at 23:05 +0100, Werner LEMBERG wrote: > > This filtering component is stupid. Why doesn't it discard > > a message after it has deleted all content anyway? > > Good question. Most of the spam is automatically deleted, but some of > them apparently not. I'm very bad in managing lists -- maybe there is > something I can do on my side, but I don't have the time to > investigate this further. >
Mailman content filtering works like this: <quote> when a message is received by the list and you have enabled content filtering, the individual attachments are first compared to the filter types. If the attachment type matches an entry in the filter types, it is discarded. Then, if there are pass types defined, any attachment type that does not match a pass type is also discarded. If there are no pass types defined, this check is skipped. After this initial filtering, any multipart attachments that are empty are removed. If the outer message is left empty after this filtering, then the whole message is discarded. Then, each multipart/alternative section will be replaced by just the first alternative that is non-empty after filtering. </quote> The problem we are seeing is that after all the parts have been removed, there is still a non-empty signature text piece left ... so the message is not discarded. BUT ... that signature is added by mailman itself! It would be worth turning this off ... to my mind it adds little at the best of times, clutters replies that include the original post, and may be the cause of failing to remove these spams! Werner, if you go to http://lists.gnu.org/mailman/admin/groff/?VARHELP=nondigest/msg_footer (I'm guessing this URL ... you need the admin password to get this far; I derived it from a list I maintain) you can remove the footer altogether. -- Nick Stoughton Cell: 510 388 1413 USENIX Standards Liaison Fax: 510 548 5738 _______________________________________________ Groff mailing list Groff@gnu.org http://lists.gnu.org/mailman/listinfo/groff
