mapisend failure especially for HP OPENVIEW NNM

[senthil_12]

C:\>mapisend -u xxx -p xxx -r xxxxxxxxxxxx@lycos.com
Message sent successfully
C:\>mapisend -u xxxx -p xxxx -r xxxxxxxxxxxx@lycos.com;xxxxxxxxx@ourdomain.net
ERROR: MAPI MapiSend Failed: 2

actually when i tried to execute the mapisend command for single email id then it works fine. but when i add additional another emailid then it is failure for session.

I already tried with SMTP mails but also these mails are not working due to the mail server rejection problem. Hence our system administrator asked him to try only mapi concept.

If any one had met the problem previously, and resolved the issue ....

Thanks in advance to reply