Install the SquirrelMail Change Password Plugin
Service Configuration1. Install the Poppassd service.
ImportantPoppassd should be installed on the same server where dovecot is installed. And if it is not on the same server as SquirrelMail, then open the poppassd port 106.
SquirrelMail2. Connect to your SquirrelMail server and note down its version.
SquirrelMail3. Download the Change Passwd 4.2f and Compatibility 2.0.x plugins.
SquirrelMail4. Extract the downloaded files and put them into the /usr/share/squirrelmail/plugins directory.
NoteThe SquirrelMail Change Password and Compatibility archives has to be extracted directly into the SquirrelMail plugin directory to enable Linux to apply the proper SELinux Context into the files. See the SquirrelMail RetrieveUserData plugin if you need help on how to do it.
SquirrelMail Configuration5. From a Terminal window, type in /usr/share/squirrelmail/config/conf.pl and press Enter. This will launch the SquirrelMail Configuration utility.
NoteIf your Terminal window has a white background, make sure that the colors are off by looking for the command Turn color on. If the command is Turn color off, type in C and press Enter to turn the colors off. This will ensure that you will be able to read all of the text.
SquirrelMail Configuration6. Type in 8 and press Enter to list the Plugins submenu.
SquirrelMail Configuration7. Install the change_passwd plugin by typing in the number corresponding to it and press Enter. When you are done, type in q and press Enter to quit then type in y and press Enter to save your changes.
Terminal
8. If your version of SquirrelMail is not 1.4.13 and higher or 1.5.1 and higher, you need to patch your SquirrelMail source. Go to /usr/share/squirrelmail/plugins/compatibility and apply the compatibility patch by typing in the commands below.

cd /usr/share/squirrelmail/plugins/compatibility/
patch -p0 < patches/compatibility_patch-1.4.8.diff Replace 1.4.8 with your SquirrelMail version. GEdit9. In the /usr/share/squirrelmail/plugins/change_passwd directory, copy the file config.php.sample and save it as config.php. Edit config.php and review the default settings. Below are settings in config.php you may wish to change * $minimumPasswordLength - Minimum length of the password. * $changePasswdInLogin - Change password from the login form. Test the SquirrelMail Change Password SquirrelMail1. Login to SquirrelMail and go to the Options page. You should see the new Change Password section. SquirrelMail2. Click the Change Password link to view the new Change Password page.