Anyone have a filter they'd like to share that rejects mail at smtp based on known malicious attachment file types? I've been out of the game for a while in this regard. Received a spam today (that squeaked past all my current filters) with a .docx file attached, and I don't even know what that ext is. I'm guessing some recent office active-x type thing.
Anyway, much appreciated if someone has such a filter, or an example or docs so I can write one myself. I've never done anything with Postfix content filters. My experience is rejecting on stuff on sending IP/domain reputation. Thanks in advance. -- Stan
