Falko, 1) The problem as in this thread (http://howtoforge.net/forums/showpost.php?p=96475&postcount=30) still exist. I've tried fedora 13, opensuse 11.1 opensuse 11.2 and same problem in both. But, when I delete /SENDMAIL/ANY/SHELL directly from file, /etc/shells Then everything works fine! But, a new user account -> 'Administrator ISPConfig' is listed. What account is this? How to remove it? 2) I hope deleting that line does not create other problem with ISPConfig. 3) So i believe the problem is with ISPConfig script. Not ISPConfig itself. But, I lost 2 days until I hit onto this thread. Falko/Till... can't you guys update the script. It still exist now, it's there for more that 1 year? Reason not using ISPConfig 3 is because have pressing project. I've used ISPConfig 2 before and am familiar with it. Thanks for the info to all that help especially Falko.