There was an error while attempting to deliver your message

There was an error while attempting to deliver your message

I f you got this Problem  do the following things to resolve 

1> Check your Subject lines of email

send it with different subject lines 

2> Try to change the message you are sending to clients .

3>Check your MX record and name server also .

Please have the mail systems administrator or the postmaster for your email account (Internet service provider like Verizon, Comcast, etc. or the domain like Google, Hotmail, etc.) contact us directly. We're unable to contact them for you; they require all requests be sent in by the customer.

The postmaster's address is usually in the format: "postmaster@example.com", where "example" is your email provider's domain (examples include MSN, AOL, Google).

if all these three not works call technical support for help

Godaddy Customer support : 

Hostgator Customer support :