Message-IDs in Sent Items folder from Exchange

Michael Loftis mloftis at
Tue Mar 15 13:51:47 EST 2005

--On Tuesday, March 15, 2005 13:26 -0500 David Base <base_david at> 

> We've recently migrated mail from Exchange to Cyrus IMAP.  All went well
> (I think, so far), except messages moved from the Exchange Sent Items
> folders don't have Message-IDs in their headers.  The problem is that
> our sort-of-custom java mail imap client needs to see Message-IDs.  I'm
> toying with the idea of writing a script that inserts unique MessageIDs
> in the headers of the Sent Items messages that don't have them, but I'm
> wondering what effect this might have on the cyrus.cache, cyrus.headers,
> and cyrus.index file in the Sent Items directories.  Anyone know if this
> is do-able?  Would I then have to reconstruct the user/username/Sent
> Items directories?

If you make any changes to the underlying files yes you will need to do a 
reconstruct on the affected folders.  You may also have to do a quota 
reconstruct as well.

Got to love crappy exchange servers, always breaking something.

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