Relaying denied. IP name possibly forged

[Janya]

I’ve a SBS 2003 with exchange server 2003. Since last couple of days I’m receiving the following error message whenever I try to send out email:

“You do not have permission to send to this recipient. For assistance, contact your system administrator.”

Somebody please help.

[Imthyaz K]

Hey even am with exactly the same problem. In my case the problem occurs when I use an outgoing server mai.xxxxxxx.com. Surprisingly when I change the outgoing server to DNS, I don’t get any problem.

Any idea what is wrong?

[Judy B]

According to me the problem is no way related to the Exchange but with the user whomever you're using as a smarthost (or the way you connect to them). Contact whomever supports the SMTP server you use as smarthost.