Symantec Enterprise Messaging Features

* IP reputation database maintains IP addresses, number of clean and spam messages from them and is used by SMTP Traffic Shaping. SMTP traffic shaping restricts or denies bandwidth used by suspicious addresses, whereby allowing unrestricted bandwidth to known clean sources. Traffic shaping decisions are not applied until the appliance has collected 50,000 messages and gathered and recorded in the local database. For best results this feature should only be enabled on email gateway devices. although it can work downstream by analyzing 'received' headers. Symantec maintains local and global reputation databases. Traffic shaping works at TCP/IP network layers.

* Bad message handling. A malformed message can cause filter hub to fail. Symantec identifies the problematic message, an alert is sent and places it in bad message queue. Bad message queue is managed by the standard mta-control command. Administrator can then take action to deliver the bad message normally, forward to a system admin's address, delete message or view and list it.

* Antivirus and antispam updates are provided from Symantec Global Intelligence Network. Antispam engine employs over 20 antispam technologies. It is 97% effective against spam emails. Symantec also has a probe network of over 2.5 million decoy accounts.

* Symantec Brightmail Gateway is available as a VMware-certified virtual appliance.

* Symantec Brightmail Gateway prevents data loss and supports incident management. Pre-built templates and dictionaries are available.

* Symantec Brightmail Gateway supports per-domain and policy based TLS encryption.