My SBS 2011 has quit sending & receiving emails with both internal and external email addresses.
SMTP seems not to be getting through via testconnectivity.microsoft.com or via local telnet from a member workstation on the LAN.
* I have checked and double checked the router and port 25 is forwarding to the SBS box.
* Ran the Fix my Connection Wizard
* I have run EXBPA on the box - First Administrative Group scan returns the following:
"Exchange server <server name> is down or unreachable. This could be the result of a network or permissions problem. Error: The network path was not found"
Any ideas on how to fix this?