We have a single exchange 2010 server installed on a 2008R2 domain controller.
We need to access the server from Outlook 2010 from a PC through the firewall.
Which ports should be open so we can access the server?
We have opened the following ports:
25, 587, 443, 135, 53, 389, 3268, 88.
But it still doesn't work in Outlook 2010 on PC, but it works in Outlook 2012 on Mac.
Do we need to edit the RPC port on CAS using HKLM\SYSTEM\CurrentControlSet\Services\MSExchangeRPC\ParametersSystem\TCP/IP Port ?
Thanks for your help.