https://www.proxmox.com/en/products/proxmox-mail-gateway/features
Proxmox Mail Gateway scans incoming and outgoing emails, detects Trojans, viruses, malware and other malicious threats.
proxmox mail gatewayfeatures
https://www.proxmox.com/en/products/proxmox-mail-gateway/overview
Proxmox Mail Gateway is an open-source email security platform protecting mail servers against all email threats.
proxmox mail gatewayemail security solution