A couple of months we started the migration from Exchange 2003 to Exchange 2010 at HQ and everything is working perfectly. A few days back we started installing Exchange 2010 on the 2nd site (non-Internet facing) and I'm facing a problem that I didn't manage to solve after a couple of days fighting. The users on the remote site cannot send Internet email and they receive the error "#530 5.7.1 Client was not authenticated". The default receive connector on the remote Exchange Server is as per attached.
After doing a lot of reading on the Internet I also created another Receive Connector on the remote server that I called "Internal" with the following settings. Also on this connector on the network tab I set the local IP to the IP address of the remote Server and the Receive mail IP to the IP address of the Server on the 2nd site.
When I remove the "Internal" connector in the Queue Viewer I receive a server authentication failure!!
Your help is really appreciated since I'm lost!!!