After a long while i am back here with a new issue in Exchange Server 2007.
Users complain that mails are not going to outside world.But they are getting internal mails.
Affected to all users in the organisation
Checked Queue viewer in Hub Transport Server and find out that mails are stuck in queue.
Checked Event Viewer of Hub and Edge server and find out that Exchange TLS certificate was expired.
To get the current Exchange certificate status
Get-ExchangeCertificate | FL ThumbPrint, isSelfSigned, NotBefore, NotAfter, Services
Renew the certificate in Hub Transport Server
New-ExchangeCertificate | “ThumbPrintOfExpiringCertificate”
Remove the old certificate
Remove-ExchangeCertificate –ThumbPrint “ThumbPrintOfExpiringCertificate”
Then run start-edgesynchronization command from Hub Transport server.
Verify the sync between Edge server by using Test-edgesynchronization
After this Queue has been released from Queue and start mail flow between Hub and Edge Server