Entourage unpredictably deletes mails and mail folders

D

dakoch100

We have an Exchange 2003 mail environment in which a few of our
Entourage users encounter a rather strange problem.
From time to time it happens that entourage deletes mail messages or
complete mail folders in an unpredictable way. Astonishingly also
"system folders" in the mailbox are deleted, which to my knowledge is
impossible to do via the GUI in Entourage. The deleted items are "hard
deleted". So they don't go into the "deleted items" folder. They can
only be restored from the mail server's "dumpster store".

We use Entourage version 11.3.3 running on a fully-patched Mac OSX.
The people affected by this problem are in a very intense
collaboration with other users working mainly with the Oultook client
under Windows. This means that most of the mailbox folders are highly
shared with these other users. Entourage is set up as a WebDAV client.
Users who interact only with other Entourage users don't seem to be
affected by this problem.

We can see that Entourage sends the deletion command to the server.
This can be seen in the WebLogs. The Entourage client sends a BDELETE
command to the server. Very often it can be seen that such a BDLETE
command is sent just seconds after the user logged in to his mailbox.
The Exchange 2003 Server is also fully patched.

We know about the "mailbox move" problem between Exchange and
Entourage in the past, which could cause loss of mail items. But our
patch level is far bejond that stage. MS claims that we are the only
site in the world with such a problem.

Regards,
Daniel
 
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