I had to update the self-signed certificate on the hub server. I found instructions on how to do that and renewed the certificate. What the instructions DIDN'T tell me was there was more to do after I renewed the certificate. Email was flowing fine before I renewed the certificate. Now, my edge server is stuck with error "451 4.4.0 Primary target responded with '454 4.7.0 Temporary authentication failure....'".
I've already recreated the hub transport and 'Test-EdgeSynchronization' and 'Start-EdgeSynchronization' both succeed without errors. But, messages are building up in the queue with the above error and retries only come back with the same error.
I'm just not very familiar with Exchange, so I'm not sure if this is important or not. But, I noticed that there's no certificate on the SMTP server when I run a 'Get-ExchangeCertificate | FL'.
Also, I had problems getting this done last year as well. I don't remember what the issue was or what I did to fix it. Since this is a problem every year, is there a way to create a self-signed certificate for longer than a year?
We have two Exchange 2007 servers (1 hub & 1 edge) running on 64-bit Windows Server 2003 SP2.
