Hi, all I install ISPCONFIG 3x on my CENTOS 5.4 using this link http://www.howtoforge.com/perfect-server-centos-5.4-x86_64-ispconfig-3 aditional I install roundcube 3x with some plugins for ispconfig3 too, everything works perfect. For my needs I have to install a mailing list sever (ex. mailman), I have try to do it several times with no luck. Does someone have or can modify the link above for implementing mailing list in this instalation flavor. regards Jorge