I am moving a company over to a hosted Exchange. The hosting company is asking us to set up a direct MAPI connection to our server. Their instructions suggest :
"Your company Network Administrator should adjust firewall settings to allow connections from Intermedia IP ranges for ALL ports. Also, please make sure the traffic coming in from those ranges is properly NAT-ed to the back-end server"
Th router is an older Draytek device - Vigor 2600. IT doesnt seem to have the option to specify specific ip ranges. How can I therefore NAT their ip range to our Exchange server.
Do I just open the whole range of ports up to the ip address of the server?
Do I put the server in a DMZ? Unlikely I would imagine.
The port redirection table allows me to specify individual ports, but allowing ALL ports would take forever.