I'm revisiting blocking certain attachments. A multi part question: Implementation, logging, testing.
Seems the accepted way to do attachment blocking is something like this: in /etc/postfix/main.cf added, without quotes: "mime_header_checks = regexp:/etc/postfix/block_attachments" in /etc/postfix/block_attachments added, without quotes: "/name=[^>]*\.(1|2|3)/ DISCARD" I have read some discussions on DISCARD and, for my purpose, it suits. I think. Is the action logged anywhere? I have not seen it. If not, can it be done? Finally, I hope (if only to avoid further exposing my ignorance), what is a simple way to test the workings, preferably with actual messages that have been received?
