email errors

All,

I am having issues with some DEVS getting emails and was wondering if anyone had any idea where to start troubleshooting.

CruiseControl 2.7.2
CVSNT 2.0.51d



javax.mail.SendFailedException: Message partially delivered;
  nested exception is:
            javax.mail.SendFailedException: 550 5.7.1 Unable to relay for [email protected]
;
  nested exception is:
            javax.mail.SendFailedException: 550 5.7.1 Unable to relay for [email protected]

javax.mail.SendFailedException: Sending failed;
  nested exception is:
            javax.mail.SendFailedException: Message partially delivered;
  nested exception is:
            javax.mail.SendFailedException: 550 5.7.1 Unable to relay for [email protected]
;
  nested exception is:
            javax.mail.SendFailedException: 550 5.7.1 Unable to relay for [email protected]

________________________________
NOTICE: The preceding email message may be confidential or protected by privilege. It is not intended for transmission to, or receipt by, any unauthorized person. If you have received this message in error, please (i) do not read it, (ii) reply to the sender that you received the message in error, and (iii) erase or destroy the message.

------------------------------------------------------------------------------
This SF.net email is sponsored by:
High Quality Requirements in a Collaborative Environment.
Download a free trial of Rational Requirements Composer Now!
http://p.sf.net/sfu/www-ibm-com

_______________________________________________
Cruisecontrol-user mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/cruisecontrol-user