Delivery has failed to these recipients or groups: *@test.com A problem occurred during the delivery of this message. Please try to resend the message later. The following organization rejected your message: test.com.

Hi All,  

In My organization I'm Getting Following Error Message When I Send mail to particular user ,Please help me on this

Delivery has failed to these recipients or groups:

****@test.co.in A problem occurred during the delivery of this message. Please try to resend the message later.

The following organization rejected your message: test.co.in

Diagnostic information for administrators:

Generating server:****.test.co.in

****@test.co.in

test.CO.IN #554 5.4.0 Error: too many hops ##rfc822;****@test.co.in