Please note that all emails sent from a to the email ids on this subdomain are bouncing back. Can you please check the problem
The email address that you can check for is george@paradigm.akgc.net.
The matter is very urgent.
Also, any luck on aol addresses, emails sent to aol addresses are still bouncing back. You must good antivirus software on your severs to stop such future problems.
Regards.
Bhavul