So I followed the below link initially when setting up Horde the first time. However there were things missing in Horde 4 so I installed the Beta of Horde 5. This was pretty awesome setup and passwd plugin worked. However with upgrading to full version of Horde 5 (not webmail version) I lost the passwd function. And on top of that I also am running separate mail and web server, which complicates things a little more. So here are my questions. Which ispconfig database should I Authenticate against? Mail server or Web server? If I change the password in Horde without the module passwd, will it work? If I switch the password for the user in Horde on the webserver ispconfig database, will it replicate over to the mail ispconfig database? Thanks! Hans-Erik http://www.howtoforge.com/install-horde-4-webmail-for-ispconfig-on-debian-squeeze-through-pear