Which excat errors dou you get in your imap client and which errors do you get in the mail.log file?
To your questiosn above:
1) is ok.
2) is ok.
3) the owner is always vmail. It does not matter if the permissions are 700 or 755. So which other user owns the maildir on your setup.
Last edited by till; 17th August 2011 at 12:17.