Your search for "filtering" returned 43 results:
DONE Support for DomainKeys Identified Mail (DKIM) RFC 4871
DKIM uses public-key cryptography to allow the sender to electronically sign legitimate emails in a way that can be verified by recipients. Prominent email service providers implementing DKIM (or its slightly different predecessor, DomainKeys) include Yahoo and Gmail. Any mail from these domains should carry a DKIM signature, and if the recipient knows this, they can discard mail that hasn't been signed, or that has an invalid signature.
Learn more at http://dkim.org.
8 comments
34
DONE Per Test Actions
Allow specifying a different action for every test, e.g. Reject for the SPF Test and Tag Subject for the Keyword Blacklist.
35
Direct ClamAV Anti-Virus Support
Add documentation and/or more direct binding to the free ClamAV anti-virus, including the phishing signatures.
5
New SURBL Test action: remove URL on hit
Add a new action to the SURBL test which would remove URLs from the email that contain blacklisted domains.
27