What is MIMEDefang?
MIMEDefang is a flexible, open-source email filtering framework that integrates with Sendmail and Postfix via the Milter API, letting you write your filtering policies in Perl.
- Powerful - inspect, modify, accept, or reject any part of an email message during the SMTP transaction
- Scriptable - express complex policies in Perl with full access to the MIME tree, headers, and envelope
- Integrates - works with SpamAssassin, ClamAV, rspamd, DKIM signing, SPF, DMARC, and more
- Proven - in production since 2000, deployed across thousands of sites; free software under the GNU GPL
- Portable - runs on Linux, FreeBSD, Solaris, and most UNIX-like systems
A Big Thank You To
The MIMEDefang Project Management Committee would like to thank Zix who graciously donated MIMEDefang to The McGrail Foundation.
