Timo Sirainen wrote on 03 August 2009 20:11:
Any suggestions about where I could look for a clue will be followed up immediately. I'm new to Dovecot, but not BSD. My next step will be to
On Mon, 2009-08-03 at 20:03 +0100, Frank Leonhardt wrote: put a
network analyser on it.
Looking at the imap traffic could help, especially if you can reproduce "works" and "doesn't work" cases. You could use also http://wiki.dovecot.org/Debugging/Rawlog
I saw that a few weeks back and thought I'd give it a go - the analyser looks less scarey ;-)
I've had some progress. The problem was the same on 1.1.16. However, if I rename the mbox file to something completely different (rather than adding a suffix as I had done before) it all suddenly starts to work. The old file was called "inbox090630". It doesn't like "inbox090630-1" but it's okay about "Inbox-09-06-30". Moving the file name back makes everything disappear again. Unsubscribing and subscribing alone makes no difference.
It's obviously looking like an internal Outlook problem. I'll check it out with other IMAP servers and see if I can confirm it. However, I'll let Microsoft fix it themselves.
Thanks for all your help!