On our mailserver, Amavis is quarantining a lot of mails claiming that they contain a banned attachment of type "text/plain,.exe" even though, when inspecting the quarantined mail, they turn out not to contain any attachment at all, not even an image or signature, just "text/plain" and possibly "text/html" within "multipart/alternative".
Most frequent victims of this are mailing list messages from the Python mailing list, but other quite innocuous individual mails are affected, too. This is becoming quite annoying for the users and creates unnecessary work for the administrators to check and release all those messages. Is this a known problem? How can it be fixed? TIA Tilman
