Hello,
I migrating from Exchange 2007 to Exchange 2013.
The Exchange 2007 infrastructure look like:
-2 CAS ( Hub1 and Hub2)
-2 MBX ( mbx1 and mbx2)
We add Exchange 2013 in the mix
2 CAS ( CAS-2K13-1 and CAS-2K13-2)
2 MBX ( MBX-2K13-1 and MBX-2K13-2)
All mailbox are curently on Exchange 2007. All inbound email pass by a SMTP Relay who forward the email to a NLB of Exchange 2013.
The send connector (internet) forward email to the SMTP relay, and the source server are only 2K7 server.
My problems is : if I replace the two 2K7 server from the source server for the 2K13 MBX, I receive this message:
The following organization refuse your message: MBX-2K13-1.contoso.com
Generation server : MBX-2K13-2.contoso.com
user@external.com
MBX-2K13-1.contoso.com
Remote Server returned '530 5.7.1 Client was not authenticated'
idea?