Which Server?

Hi All, I'm about to implement ESET Nod 32 on my 60 PCs and have also purchased licenses for 100 exchange mailboxes. My exchange setup isn't straight forward though, let me explain.

Both incoming and outgoing emails are Natted through a seperate server to my exchange server. This seperate servers hosts MailMarshal Spam Filter. Emails come into it, go through Mail Marshal and if the filter doesn't stop them they get pushed to the exchange server. Similarly, Outgoing emails are sent from the Exchange server, through Mail Marshal on the other server and then Natted to the external world.

My question is, which server should I install the ESET Nod 32 for Exchange on? I realise this might become obvious once I get the package delivered (I only got the PO signed off today) but I want to be as prepared as possible

Any advice anyone can give will be much appreciated. And any other advise on implementation will also be appreciated.

thanks,

Jody

 

on the exchange box - it's at the mailbox level.