On Mon, 2012-01-02 at 17:17 +0100, Preacher wrote: > So I forced to install the Debisn 7.0 packages with 2.0.15 and finally > got the server running, I also restarted the whole machine to empty caches. > But the problem I got was that in the huge folder hierarchy the > downloaded headers in the individual folders disappeared, some folders > showed a few very old messages, some none. Also some subfolders disappeared. > I checked this with Outlook and Thunderbird. The difference was, that > Thunderbird shows more messages (but not all) than Outlook in some > folders, but also none in some others. Outlook brought up a message in > some cases, that the connection timed out, although I set the timeout to > 60s.
Did you run the Courier migration script? http://wiki2.dovecot.org/Migration/Courier Also explicitly setting mail_location would be a good idea.