Exchange 2010 Edge Server High Availability

Exchange Server 2010 Edge Role provides a way to place Exchange Servers in the perimeter network (aka DMZ) that route messages from external to the internal messaging system and vice versa.

The Edge Server system provides the following functions:

1. Accept incoming Email from external

2. Accept outgoing Email from internal

3. Check if Email is SPAM and probably delete or reject it

4. Check if Email is Virus infected and probably delete the virus or reject the mail

5. Check if Email is for an existing user and probably reject the email

When implementing Edge Servers, a very importing decision is to choose a suitable Antivirus & Antispam solution which is specifically designed for Edge Servers, but in general the most well-known Antivirus Solutions provide this support.