The IMAP options in Server Admin let you select "Allow IMAP Administrator Access," with a default TCP port of 626. Mail administrators can remotely access the server at this port, view outgoing mail waiting to be delivered to other SMTP hosts, and view mail in users' mailboxes.
Warning: Care should be taken to restrict this access to trusted administrators. The messages can be read, forwarded, and deleted. This is a very powerful feature that is useful in troubleshooting and mail server management.
How to enable Access
1. Open Server Admin and log in.
2. Click the Internet tab.
3. Choose Configure Mail Service from the Mail Service menu.
4. Click the Protocols tab.
5. Click IMAP Options.
6. Be sure that the checkbox for Allow IMAP Administrator Access is selected.
Preparing the administrator user
In your Users & Groups list, be sure you have at least one user set up for this purpose. The user must have have three characteristics:
- privileges to log in to the server
- must be an Admin user (select "User can administer the server")
- must have mail enabled (IMAP)
Connecting to the IMAP Admin Access Port
1. You must have an IMAP mail client that works with nested folders and allows you to change the default port for IMAP connections (for example, Microsoft Outlook Express).
2. In the IMAP client, set up a user account that corresponds to the user created at the server. Enter the information for your server as you would for any account, but change the port to 626 (in Outlook Express, this option is under the Advanced section when setting account preferences).
3. Log in from the IMAP client.