Release Notes: Unusual formatting of base64 attachments intended to bypass filters is now detected. More HTML tags that can be used to attack mail clients or deliver web bugs are now defanged. Other minor bugfixes and enhancements were made.
Release Notes: This release added default poisoning of the application/x-msdownload MIME type in response to a new worm. Full MIME-type poisoning support will be available shortly. This release was accelerated for security reasons.
Release Notes: The unrar executable check was fixed to not test for unrar if RAR scanning is already explicitly disabled by $DISABLE_RAR_SCAN. Recipient notification now works when sanitizing on a relay (e.g. in front of an Exchange server).
Release Notes: RAR archive scanning and the ability to mangle or poison WMF image files were added.
Release Notes: This release fixes bugs in scanning of multi-layered MIME attachments, and an infinite loop on certain MIME boundary strings.
Release Notes: Scanning of JPEG attachments to detect Microsoft BO attempts was added. A minor bugfix was made in .ZIP and document scanning.