#550 5.6.0 M2MCVT.StorageError, storage error in content conversio

I am having problem with one of users using Outlook 2007 with Exchange 2007.
Outlook is configured to use Outlook.pst file as the default folder. Whenever
user replied to external email, the server returns the error below:

#550 5.6.0 M2MCVT.StorageError, storage error in content conversion ##

I uninstalled and reinstalled Office 2007. The problem was solved for a
while. Later, it comes back again.

I appeciate anyone can help on this problem.

Is the user sending an attachment - either vcard in the sig or a file they
attached?
Is the user signing it with a digital signature?

--
Diane Poremsky [MVP - Outlook]
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Outlook & Exchange Solutions Center: http://www.slipstick.com

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"WilliamLin" wrote in message
...
I am having problem with one of users using Outlook 2007 with Exchange
2007.
Outlook is configured to use Outlook.pst file as the default folder.
Whenever
user replied to external email, the server returns the error below:

#550 5.6.0 M2MCVT.StorageError, storage error in content conversion ##

I uninstalled and reinstalled Office 2007. The problem was solved for a
while. Later, it comes back again.

I appeciate anyone can help on this problem.