I set up everything when I created my account and everything was working fine but after sometime, when I gave my email id to someone, he told me that gmail is giving and error;
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:
There is no one at this address
Action: failed
Status: 5.0.0
How can I solve this??