Problem with SMS messages

list Frank Lamoreaux
Mon, 31 Dec 2007 10:17:30 -0700
Message-Id: <user-3004ddf7320f@xymon.invalid>

Hello,
I am having a simple problem with SMS messages being sent to my Tmobile phones.  I did a manual telnet into my mail server that sends these messages and found that the ones that are coming from hobbit at xxx are failing.  But when I use my own From address user-1e8863f07c61@xymon.invalid the messages go through with no issues.  Any suggestions on approaches I can take to fixing this problem.  Or how could I change the from sender on the hobbit server?

Thank you for your time.

Frank