Can someone give me a diagram of the location of TMG (Threat Management Gateway) when it is used to work with Exchange 2010.
for instance :
Firewall->TMG-Exchange Edge->Firewal-> Hub/CAS - Mailbox
I believe it is preferred to put TMG in the DMZ along with Exchange Edge Server. in this case, Where should I install Anti Spam , Anti Virus, Anti Malware ? should I install them on TMG server or Edge Server? and do I need 2 TMG servers and 2 Edge servers for fault tolerance and/or Load balancing?
Any help will be very much appreciated.