OK all, this is truly boggling to a few experienced people in my reach as well as myself. All of a sudden my Exchange server 2010 stopped receiving emails. I can send out just fine except from my SQL server receipt email to customers. I have done a telnet test, it shows my ports working. I have added the users to the Exchange Management Console 2010 , now I am wondering do they need 'roles' or permissions to relay the messages? OR to accept the messages? (Accepting/receiving is the issue) Do I need to open port 587 instead of using port 25? If so do I need to remove one of the ports form the properties of the receive connector? None of my users are able to receive but all of them can send out. Also on the SQL side I cannot even send a 'test' email out from the SQL Studio in the Database Management console. Calling all Exchange Experts!
This is the error I get when trying to add port 587 where I read can be used for receiving.
(PID 6324, Thread 43) Task Set-ReceiveConnector writing error when processing record of index 0. Error: Microsoft.Exchange.Management.SystemConfigurationTasks.ConnectorMappingConflictException: The values that you specified for the Bindings and RemoteIPRanges parameters conflict with the settings on Receive connector "SERVER1\Default SERVER1". A Receive connector must have a unique combination of a local IP address, port bindings, and remote IP address ranges. Change at least one of these values.