On 19.2.2010, at 17.28, Werner wrote: > Am 15.02.10 15:18, schrieb Timo Sirainen: >> On 15.2.2010, at 16.14, Stan Hoeppner wrote: >> >>> Upgraded from Debian Dovecot 1.0.15 to Debian Dovecot 1.2.10-1~bpo50+1. >>> >>> Problem: Instantly noticed in TB 3.0.1 Win32 that all emails in all folders >>> were marked as unread. >> >> This is a Thunderbird bug and there have been several threads about this >> here. Basically the fix is to disable CONDSTORE support in Thunderbird until >> 3.0.2 is released. >> > > But this should not happen with POP3?
No. > I'm asking because I want to migrate from > courier to dovecot. In the Lab we've converted the mailbox to dovecot-format > BUT when using POP3, TB wants to download all Mails again. Have you read http://wiki.dovecot.org/Migration and http://wiki.dovecot.org/Migration/Courier? If you have, especially note this part: Some clients re-download all mails if you change the hostname in the client configuration. Be aware of this when testing.