Our exchange 2010 server has worked flawlessly for a year now. Today all of a sudden we are no longer receiving inbound external email.
Note - internal mail works both ways!
2008 R1 server running in a VM on ESXI 4.1 platform
2010 Exchange Server
I have verified that we can telnet to both ports 110 and 25 to our server
There are no errors in the event viewer
All exchange services are running
We have rebooted the domain controller running exchange no change
We are using an external GMAIL account to test. NOTE - no kick back??
Please help!! thanks