Google Apps Migration for Microsoft Exchange Administration Guide - Manual (Page 43)

Migration 43
2. Click Next.
IMAP Port Enter the connection port on the IMAP server.
IMAP Path Prefix Enter the IMAP folders' path prefix that is
common to all folders. This usually is the IMAP
namespace for the folder names.
For example, if the IMAP folder listing for a
user is:
INBOX
INBOX.Sent
INBOX.Drafts
...
and so on, then
INBOX
is the path prefix.
For another example, if the IMAP folder listing
is:
user.user1.INBOX
user.user1.Sent
user.user1.Drafts
...
and so on, then the path prefix is
user.user1
.
Typical values of path prefix are:
• Groupwise IMAP, Gmail, Dovecot: none
(leave the field blank)
• Cyrus, Courier:
INBOX
If in doubt, consult your IMAP server
documentation to find the IMAP folders'
common namespace.
Setting Description