On 23.12.2011, at 0.21, Brian L. Matthews wrote:
I just upgrade from dovecot 1.2 to dovecot 2.0.16. I use dovecot as a local IMAP server to archive email from my corporate email account (on Exchange). I don't have any automated archiving, I just periodically move messages from my Exchange inbox to the IMAP inbox. I'm on Mac OS X 10.6.8 using Entourage as my mail client.
In the previous version of dovecot, the Received date of the email was preserved when I moved a message, but it's not in 2.0.16, it's set to the date and time I move the message. If I open a message, the date displayed is the date on the message as expected.
It should still work the same in Dovecot v2.0. I just tested that giving a timestamp to APPEND command works. Did you also upgrade the IMAP client? Maybe it doesn't add the timestamp anymore.