Proxmox Mail Gateway - Protect mail server against spam, viruses and malware with Proxmox Mail Gateway security for businesses, government, education and non-profit organizations.
Rspamd - Rspamd is an advanced spam filtering system that allows evaluation of messages by a number of rules...
SpamAssassin - Use this program to "Unspam" your mailbox(es).
Oikik Antispam - Oikik is a cloud-based email filtering service that works with your existing email service.
Broadcom Email Security - Anti-spam gateway blocks more than 99% of spam with less than one in 1 million false positives and...
EuropeanMX - Protects your company by blocking spam and virus before they reach your network.