10-18-2005, 07:01 AM
Join Date: Dec 2004
Location: in a house...
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The whole jist of it is that the BES server is constantly maintaining 2 types of connections, the first is to the RIM Relay which is port 3101 outbound initiated bidirectional like people have already mentioned, in addidtion to that, the BES server maintains a MAPI connection using RPC (assuming exchange server here) for each of the BES users. I guarantee your firewall admin will not open up any sort of RPC port, especially to your exchange server on the firewall.
Now having said that, it is possible to split the Blackberry Router portion of the BES server off and drop it onto your DMZ and then have the internal BES talk through the firewall to the BB Router.
I have never setup a BB Router service off the same box as the BES itself, but it is a supported configuration from RIM so you can most likely find documentation on how to do it from them.