Users cannot send emails to external email address outside the corporate network

Help! All of our users mysteriously lost the ability to email anyone outside of corporate network from their blackberry hand helds.  The black berry enterprise server reports this error in the event log:
{} Send() failed: ERR_SUBMIT_MAIL, Tag=376836

(I replaced the senders email with

Has anyone see or have this happen to them?
Thank you!
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Have you just tried to restart the BES server and see the result?

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jbishop2446bAuthor Commented:
That fixed it... why???????????????  Maybe a service failled or shut down.

Thank you :)
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