i have setted up the server with the guide "perfect ... for FC5" with ISPconfig, everything seems to be fine, except the mail system. first problem is: one of my clients send me emails, i can just get some, but can't get the others. second problem is: some clients told me that they have sent me emails, but i did not get anyone, and they also did not get any return mails. anyone here got this problem also? and anyone could tell me how to uninstall postfix, and then install qmail? thx a lot.