You install IMAP and POP3 servers as a POSIX program package using the POSIX installation program (see the manual “POSIX Basics for Users and System Administrators”).
Installation requirements
To permit the installation and operation of IMAP and POP3 servers, the PLAM librarySINLIB.MAIL.033.IMAP must be available, shareable and read-only. The POSIX subsystem must have been started.
Starting installation
IMAP and POP3 servers must run in privileged mode. You must therefore install IMAP and POP3 servers using the POSIX installation command under the SYSROOT or TSOS ID (UID=0, GID=0):
| Start installation: Select the following function: Specify the following values in the screen which is then displayed: | |
IMON support?: |
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name of product: |
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package of product: |
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You can modify the installation path displayed for the installation procedure. However, it is advisable to keep to the default /opt/MAIL/imap.
If another version of the interNet Value Edition delivery package is installed, the POSIX installation program issues a corresponding error message.
IMAP and POP3 installation is fundamentally also possible when interNet Value Edition is already installed. The IMAP and POP3 daemon programs are then replaced by the current versions.
| Abort IMAP/POP3 installation by pressing the K2 key if you want to uninstall interNet Value Edition before installing IMAP/POP3. |
| Continue IMAP/POP3 installation by pressing the send key if you do not want to uninstall interNet Value Edition beforehand. |
The POSIX installation program then checks whether the /opt file system has sufficient memory space and reads all the files from the PLAM library into the POSIX file system or generates references to PLAM library members.
Files and directories used by the IMAP and POP3 servers
The table below lists the most important files and directories used by the IMAP and POP3 servers. If you use an installation path which differs from the standard Postfix installation path, the path names specified in the table must be adjusted accordingly.
Name | Type | Explanation |
/opt/MAIL | Directory | |
/opt/MAIL/imap | Directory | Standard IMAP installation directory |
/opt/MAIL/imap/readme | Directory | Online documentation |
/opt/MAIL/imap/sbin | Directory | Daemon programs |
/opt/MAIL/imap/sbin/imapd | Program | IMAP daemon |
/opt/MAIL/imap/sbin/ipop3d | Program | POP3 daemon |
/opt/MAIL/imap/share | Directory | Online documentation in the form of man pages |
/usr/sbin/in.imapd | Link | Link to IMAP daemon |
/usr/sbin/in.ipop3d | Link | Link to POP3 daemon |
/etc/imap | Directory | Directory for IMAP/POP3 files (X.509 certificates, private keys) |
/etc/imap/MAKE.CERT.sh | Script | Script for generating X.509 certificate requests and X.509 test certificates |
/etc/imap/certs | Directory | Directory for X.509 certificates |
/etc/imap/private | Directory | Directory for private keys |
/etc/inet | Directory | Directory for configuration files (in particular inetd) |
/etc/inet/services | Text file | Assignment of service names to port numbers |
/etc/inet/inetd.conf | Text file | Configuration file for inetd |
/var/mail | Directory | Directory for mailboxes |
/var/mail/USER | Mailbox file | Mailbox for the user USER |
Uninstalling the IMAP server and POP3 server
Uninstall the IMAP and POP3 servers using the POSIX installation command under the SYSROOT or TSOS ID (UID=0, GID=0):
| Start uninstallation: Select the following function: In the subsequent screen display mark the line containing the following values and confirm your selection by pressing the send key:
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| Follow the further instructions issued by the tool. |