OK. Obviously I have to start with question from the beginning. I've installed last version of RoundCube (roundcubemail-0.2-beta2) on my mail server (postfix, dovecot, poppassd, apache2, mysql, ...), and it work nice. You can try it on
RoundCube Webmail :: Welcome to RoundCube Webmail with username "cubemail", password "1234"!
But, I need to install "change password" option for our users. I already have installed poppassd which work on port 106. I've tried to install addon "Plesk (poppassd) Password Change for 0.1.1" but it seems don't work on my version of RoundCube. Then, I tried to install "cPanel Addon" but I don't have cPanle
Last chance was to install what you suggest and I'm not shure that I understood you very well. I've applied new field for password in the table "users". Then I changed the line with sql command according with it. I got the encrypted password in the databases but nothing happened with the password from the current email session (id est linux password)!
Current instalation is with cPanel Addon only with options for password. So, what how ... I think you understand me
Thanks!