The maximum of hop count was exceeded for the message. This means that your server does not know where to send the mail.
Cause
- An internal loop has occurred between receiving and sending server
- Numerous redirects and different intermediate mail exchanges
Fixes
Step 1: Creation Of Loops
Checking some situations that responsible for the creation of loops between servers.
Step 2: Override
Override the settings of Exchange Server manually.
Step 3: Contact NET For More Information
Contact NET for verification on this error.