I’m writing to see if someone can help me. Our business emails are being returned with the error code below for the past few weeks and I’m at a loss as to how I can fix it. If anyone can help it would be greatly apprecitated.
Diagnostic information for administrators:
Generating server: BY5PR12MB3923.namprd12.prod.outlook.com
Remote Server returned '550 5.7.705 Service unavailable. Access denied, tenant has exceeded threshold.