Deployed at the gateway or in front of the mail server, anti-spam appliances are hardware-based solutions integrated with on-board anti-spam software and are normally driven by an operating system optimized for spam filtering. They are generally used in larger networks such as companies and corporations, ISPs, universities, etc.
Often anti-spam appliances are selected instead of software only solutions because of the following reasons:
- Customer prefers to buy hardware instead of software
- ease of installation
- operating system requirements (e.g. company policy requires Linux, but software is not available under this OS)
- independence of existing hardware
- SpamHelp A list of anti-spam appliances.