On Tue, 2010-11-16 at 17:40 +0000, Timo Sirainen wrote: > I've heard it several times, and it's always been Outlook. It just seems > to go nuts when server changes. No one who has complained about this has > ever come back to say if they managed to fix it somehow. > > My guess: recreate the account in Outlook and hope for best.
Oh, the other possibility of course: You seem to be using mbox format? If the message's IMAP UIDs change, the POP3 UIDL changes and the messages get redownloaded. You should at least explicitly set mail_location setting so Dovecot doesn't use autodetection. Also look for Dovecot errors in log file.
