Hexamail Guard
From Wikipedia, the free encyclopedia
Hexamail Guard is a server based software antispam filter for the Windows and Linux platforms.
Acting as a gateway at the SMTP level or as a plugin for Microsoft Exchange Server, it supports most common anti spam filtering techniques including:
- Bayesian pattern matching.
- Keyword/String/Expression.
- Header checks.
- DNS based blocklists.
- URL blocklists.
- Image analysis.
- Sender analysis using neural network.
- Cloaking/Phishing detection.
- Challenge-Response.
- Blacklisting.
- User-configurable whitelists.
- Automatic Internet updates to blocking features.
- Optional antivirus scanning.
In addition it supports external POP3 account downloading and filtering, a spam quarantine with multiple options for processing including: listing, forwarding, blocking, marking/tagging and deletion. Users can review their own spam through a web-based quarantine view.