Mail: ClamAV Tagging Mode

The ClamAV antivirus filter now has an optional tagging mode which will insert the header “X-Rollernet-ClamAV” if a signature match is found. The behavior of the “reject on match” mode is unchanged.

As part of this we’ve added two new rules to SpamAssassin for scoring based on the presence of this header: ROLLERNET_CLAMAV (default score of 10 for matches) or ROLLERNET_CLAMAV_3RDPARTY (default score of 4 for ignored third party matches).