I just tried to copy a large number of messages from an Outlook PST file to an IMAP server running Cyrus 2.1.12, but Outlook 2002 SP2 would not cooperate. As test I then tried copying to an old Cyrus 1.6.22 server - that works!
Surely the problem is with Outlook, not Cyrus, still it would be interesting to know just what trips up Outlook with the more recent Cyrus version. There is no problem for Outlook connecting, making folders, reading messages etc against Cyrus 2.1.12, but the copying operation always fail - Outlook seem to hang. It uses no CPU, does no IO from the PST file and says nothing to the IMAP server. All this with Outlook 2002 SP2 running on Windows XP. -psi