Hi

What it basically menas is that your smpt server does not know how to send mail to the gateway to route the mail to the domain hotmail.You need to tell your smtp server to relay your mail to the gateway...

You can try this test go to to your mail server and try sending a mail to [email protected] you would see that your mail isnt delivered.So you need to tell your mail server about your mail gateway..ask your sysadmin to do that ;-D

regards
Hrishy