After nearly one month of struggling to get password plugin for RoundCube - which is used to change email password within RoundCube itself - working
thanks to God i finally managed to do it with the help of SKaero from RoundCube support forum .
Ok enough talking .
in order to get this feature on , on your kloxo panel , navigate to your roundcube installation folder
(if you are using webmail , it is mostly located in :


/home /kloxo /httpd / webmail/roundcube

after going to the roundcube installation directory ,goto:

plugins/password/

find

config.inc.php.dist

and renamed it to :

config.inc.php

.
now open this file and fill the corresponding fields as shown below :
]
$rcmail_config['password_driver'] = 'sql';


$rcmail_config['password_db_dsn'] = enter your kloxo username and password , or any other username which has access to kloxo database

example: 'mysql://myrootUsername:Myrootpassword@localhost/kloxo';


and finally the tricky section !:

$rcmail_config['password_query'] = 'UPDATE vpopmail.vpopmail SET pw_passwd= %c, pw_clear_passwd= %p WHERE pw_name= %l AND pw_domain = %d LIMIT 1';


now you are good to go .
for activating this plugin , now you need to go to config directory , located in the roundcube directory .
open the file :

main.inc.php

and located:

$rcmail_config['plugins']

change it to :

$rcmail_config['plugins'] = array('password');

( if you want to use other plugins with roundcube , just add the name of the plugins directory to the array() list , separate the names with a comma .

now just save this file and easily change your passwords through roundcube Smile

Final Words :
these steps are guaranteed to work , while other approaches are not , we have been discussing this issue on RoundCube support forum for almost a month you can have a look at it here:

http://www.roundcubeforum.net/index....c,9522.30.html

so if you want a hassle free setup , use this . don't pay attention to other drivers ( you might say that hey i have vpopmail , so i can use vpopmaild driver ,! this wont work on kloxo 6.1.12 as i had tested it many times .
i need to thank SKaero for his dedication in solving my problem , whithout his help i couldnt come up with this solution .
so all in all i hope this tutorial comes handy to anyone whom might need it .