Hi @gangajamna. Thanks for posting. Please keep in mind that this is a community forum rather than a support form. Users here do not have access to internal GoDaddy systems and generally aren't able to assist with account specific issues. For that, you'll want to connect with our customer care team.
It's hard to say for sure what might be happening without more information. For example, if the email is generating a rejection notice to the sender, it would be helpful to know what the error is. You may also want to provide the email addresses in question. With that information, others may be able to offer suggestions on how to resolve the issue.
JesseW - GoDaddy | Community Manager | 24/7 support available at x.co/247support | Remember to choose a solution and give kudos.