Can't send mail to server or SMTP thru firewall

When I SMTP from outside the firewall I get this:

This is the Postfix program at host webhost.rootcon.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The Postfix program

<[email protected]> (expanded from <[email protected]>
mail for webhost.rootcon.com loops back to myself



Status: 5.0.0

But from inside the firewall, I can relay and receive mail. Am using a Watchguard Firesafe Firewall.

Please advise...

 

Got it

I put it outside the hardware firewall and it works fine. Damn Watchgards! Thanks