CONFIGURING
In addition to enabling or disabling the IMAP TCP/IP or SSL port, you can change the port number, and enable or disable TCP/IP or SSL authentication options.
About this task
By default, IMAP clients connect to TCP/IP port 143 on the Domino® server. You might need to specify a different port number if there are multiple instances of the IMAP service on the host machine as, for example, on a partitioned server. You might also change the default port to a nonstandard port number to "hide" it from clients attempting to connect to the default port, or if another application uses the default port on the server. Disable the port or change the security options to prevent IMAP clients from accessing the Domino server.
Configuring IMAP authentication options on servers that use Internet Site documents
On servers that use Internet Site documents, the IMAP service obtains port authentication settings from the Security tab of the IMAP Site document, rather than from the Server document. As a result, when Internet Site documents are used, the TCP/IP and SSL port authentication settings described in the procedures that follow are not available in the Server document. Settings in the Server document still provide the port numbers and status for the IMAP TCP/IP and SSL ports, and enable the IMAP ports to honor server access restrictions.
To determine whether the use of Internet Site documents is enabled for a server, check the value of the Load Internet configurations from Server\Internet Sites documents field on the Basics tab of the Server document. If this field is set to Enabled, the server uses Internet Site documents to configure all of its Internet protocols (IMAP, POP3, SMTP, and so forth).
If the server uses Internet Site documents, and an IMAP Site document is not present in the Domino Directory, or the authentication options in a configured IMAP Site document are set to No, users cannot connect to the IMAP service. In each case, IMAP clients receive the error This site is not enabled on the server when attempting to connect to the IMAP service:
To enable the IMAP TCP/IP port
On servers with multiple TCP/IP ports, by default, the IMAP service uses the port listed first in the NOTES.INI file as the preferred path. If you want the service to use a port other than the default one, you can configure it to use a specific port.
Procedure
1. From the Domino Administrator, click the Configuration tab and then open the Server document for the server that runs the IMAP service.
2. Click the Ports -> Internet Ports -> Mail tab.
3. To enable the default TCP/IP port, in the Mail (IMAP) column, change the value of the TCP/IP port status field to Enabled.
4. Click Save and Close or edit additional settings, as directed in the following procedure.
To configure the IMAP TCP/IP port
3. In the Mail (IMAP) column, complete these fields, and then click Save & Close:
To enable and configure the IMAP SSL port
Before you begin
Familiarize yourself with the Domino security model and set up SSL on the Domino server.
Related concepts The IMAP service Understanding Internet site documents on Domino servers Setting up Notes and Internet clients for SSL authentication Name-and-password authentication for Internet/intranet clients
Related tasks Specifying the default IMAP service greetings Enabling and configuring the IMAP service port Starting and stopping the IMAP task Setting up SSL on a Domino server Binding an Internet service to an IP address Preparing a mail file for IMAP access