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Switching Between Mail Servers

It is strongly recommended that you select the mail server you want to use during installation or upgrade of Parallels Plesk Panel. However, if you already installed or upgraded your Parallels Plesk Panel, and then decided to switch to another mail server, you can do it with the help of Parallels Products Installer utility.

Note: Please note, that when Parallels Plesk Panel is switched from using Qmail mail server to using Postfix mail server, the max_letter_size parameter is changed to the default value for this mail server.

To switch your Parallels Plesk Panel from Qmail mail server to Postfix mail server:

  1. Run the parallels_installer binary file, which is located in the directory /usr/local/psa/admin/bin/ on RPM-based Linux, FreeBSD and Mac OS systems, and /opt/psa/admin/bin/ on deb-based Linux systems.
  2. Read the instructions displayed on the screen, and then type 'n' and press ENTER to continue. The Parallels Products Installer will detect your existing installation of Parallels Plesk Panel and ask if you want to upgrade it.
  3. To confirm upgrade, type 'y' and press ENTER.
  4. Specify the source of Parallels Plesk Panel distribution package.

    You can choose to upgrade from a local medium, the official Parallels Plesk Panel update server, or another site. By default, the official Parallels Plesk Panel update server is selected. If you wish to retrieve installation files from a local medium or network storage:

    1. Type 's' and press ENTER.
    2. To choose a local medium, type 1. To choose a network storage device, type 3. Press ENTER.
    3. If you chose a local medium, specify the location of psa.inf configuration file. If you chose a network storage, specify the address. For example, http://example.com, http://192.168.10.10, ftp://192.168.10.10.
  5. If you use a proxy server, specify the following settings:
    1. Proxy host name and port number. To specify them, type 's', type the host name, type the port number, and press ENTER to continue.
    2. User name and password. If this proxy server requires authentication, type 'a', press ENTER, type user name and press ENTER, type password and press ENTER.
    3. When finished with specifying proxy settings, type 'n' and press ENTER to continue with installation.
  6. Leave the installed product version unchanged, type 'n' and press ENTER to continue.
  7. On a FreeBSD system, specify FreeBSD Ports Collection tarball URL, distfiles master site URL and Ports updating source, if required. It is recommended that you use the default settings. Press ENTER to continue.
  8. In the components list, specify the Postfix mail server by typing is number in the list and pressing ENTER.

    The selected packages are marked with [*] symbols. The packages that are already installed and do not require updating are marked with [=] symbols. To select or deselect a package, type the respective number and press ENTER.

  9. To continue with the upgrade, type 'n' and press ENTER. When prompted, confirm upgrading: type 'n' and press ENTER again.

    The packages will be downloaded and installed.

To switch your Parallels Plesk Panel from Postfix mail server to Qmail mail server:

  1. Run the parallels_installer binary file, which is located in the directory /usr/local/psa/admin/bin/ on RPM-based Linux, FreeBSD and Mac OS systems, and /opt/psa/admin/bin/ on deb-based Linux systems.
  2. Read the instructions displayed on the screen, and then type 'n' and press ENTER to continue. The Parallels Products Installer will detect your existing installation of Parallels Plesk Panel and ask if you want to upgrade it.
  3. To confirm upgrade, type 'y' and press ENTER.
  4. Specify the source of Parallels Plesk Panel distribution package.

    You can choose to upgrade from a local medium, the official Parallels Plesk Panel update server, or another site. By default, the official Parallels Plesk Panel update server is selected. If you wish to retrieve installation files from a local medium or network storage:

    1. Type 's' and press ENTER.
    2. To choose a local medium, type 1. To choose a network storage device, type 3. Press ENTER.
    3. If you chose a local medium, specify the location of psa.inf configuration file. If you chose a network storage, specify the address. For example, http://example.com, http://192.168.10.10, ftp://192.168.10.10.
  5. If you use a proxy server, specify the following settings:
    1. Proxy host name and port number. To specify them, type 's', type the host name, type the port number, and press ENTER to continue.
    2. User name and password. If this proxy server requires authentication, type 'a', press ENTER, type user name and press ENTER, type password and press ENTER.
    3. When finished with specifying proxy settings, type 'n' and press ENTER to continue with installation.
  6. Leave the installed product version unchanged, type 'n' and press ENTER to continue.
  7. On a FreeBSD system, specify FreeBSD Ports Collection tarball URL, distfiles master site URL and Ports updating source, if required. It is recommended that you use the default settings. Press ENTER to continue.
  8. In the components list, specify the Qmail mail server by typing is number in the list and pressing ENTER.

    The selected packages are marked with [*] symbols. The packages that are already installed and do not require updating are marked with [=] symbols. To select or deselect a package, type the respective number and press ENTER.

  9. To continue with the upgrade, type 'n' and press ENTER. When prompted, confirm upgrading: type 'n' and press ENTER again.

    The packages will be downloaded and installed.