[Evolution] Echange-bound messages getting stuck in Outbox

["Norman P. B. Joseph" <joseph ctcgsc org>]

OS: RH9
RPMS: ximian-connector-1.4.6-0, evolution-1.4.6-0

User's Exchange account is configured to send out e-mail through
Exchange (he also has local accounts that send out through the local
Sendmail service).  Whenever he tries to reply to an e-mail message
received through his Exchange account he receives the following pop-up
error message:

        Error while performing operation.
        Could not send message.
        This might mean that your account is over quota.

Of course, there is no quota issue with this user's account.  I tried
running with CAMEL_VERBOSE_DEBUG, but it provided no interesting
messages when trying to tickle the error.  Do the Evolution literati
have any suggestions for where to look from here?

TIA,

-- 
 Norman Joseph, Systems Engineer           joseph ctcgsc org      IC|XC
 Concurrent Technologies Corporation         814/269.2633         --+--
 Global Systems Center                                            NI|KA

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