Server error in '/' Application

Server error in '/' Application
The server rejected one or more recipient address.The server response was : (ip address given) <email id>...
we do not relay <email id>

Description :
An unhandled exception occured during the execution of the current web request.Please review the stack trace for more information about the error and where it originated in the code.

Exception details : System.Runtime.Interopservice.COMException: The server rejected one or more recipient addresses.

Source error :
An unhandled exception was generated during the execution of the current web request.Information regarding the origin and location of the exception can be identified using the exception stack trace.

Stack trace :
[COMException (ox8004020f).The server rejected one or more recipient addresses.
[TargetInvocationException: Exception has been thrown by the target of an invocation]
[HttpException (0x80004005): Could not access 'CDO.message' object.]

I obtained the above error message while submitting my resume details in one of a famous IT company website.Real proof and more stack trace information are available at the picture which is displayed below.