 Try doing the copy with the Thunderbird hack on
IMAP clients are supposed to copy over INTERNALDATE when they copy a message from one mailstore into another. Thunderbird doesn't, and evidently your version of Eudora doesn't, either.
Bad IMAP client! No biscuit!
Anyway, we do have a workaround for this. Instead of logging into IMAP as "user" or "user@example.com", log in as "user/tb" or "user@example.com/tb". Then do the copy. The Zimbra server will set INTERNALDATE from the Date header instead of the INTERNALDATE specified on the IMAP APPEND, and you should be happy again. |