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Proxmox Mail Gateway - Protect mail server against spam, viruses and malware with Proxmox Mail Gateway security for businesses, government, education and non-profit organizations.
Dovecot - Dovecot is an open source IMAP and POP3 email server for Linux/UNIX-like systems, written with...
Rspamd - Rspamd is an advanced spam filtering system that allows evaluation of messages by a number of rules...
Cyrus IMAP - The Cyrus IMAP server differs from other IMAP server implementations in that it is generally...
SpamAssassin - Use this program to "Unspam" your mailbox(es).
DBMail - DBMail is a fast, scalable IMAP4 and POP3 server that stores all email and users in a Postgresql...