ClamAV is an anti-virus engine, which is commonly used for email and web scanning, or gateway and fileserver securing. It provides a command-line scanner, a sendmail milter, automatic signature database updates, built-in support for many archiving and container or mail encoding formats, scanning standard ELF and compressed executables, as well as common office document formats.
Python based milter for Sendmail and Postfix MTA servers to check incoming e-mails for Microsoft Office attachments. If a Microsoft Office document is attached to the e-mail, it will be scanned for suspicious VBA macro code. Files with malicious macros are, depending on configuration, either removed and replaced by harmless text files or alternatively the whole e-mail will be rejected.