Open source DMARC implementation
Petidomo is a small, easy-to-administer mailing list server
Protects you from spam mails and virus mails effectively with milter
The free cross-platform antivirus software tool-kit
Outgoing email rate limiter
Converts quoted-printable, UTF-8, UTF-16BE, UTF16LE to 8-bit.
Tools to convert Z mark-up to HTML or text.
Mail system postfix dovecot openldap contact syncronization
Blocks spam without blocking any legitimate messages
a lightweight ANSI C library for handling POP3 mailboxes
OpenSource high performance mail policy daemon for Postfi