Hi there. In the tutorial - in the beginning of it - it is said that the hostname used in the tutorial is server1. So I used it during the installation process and everything is working fine (with IPSconfig too). However, when I run one of my domains through a DNSStuff check, it gives me a warning, that the mailserver for mail.domain2.com has a non-existant server1.domain1.com answering which could cause problems with e-Mail delivery. I'm not sure if my description of the problem is exhaustive enough. So if it's not, please tell me what other information is needed. My setup would be: Server hostname: server1.domain1.com The domain name being checked by DNSStuff: domain2.com As for nameservers I'm using the ones provided by my server provider and that works perfectly. I will probably want to create a primary nameserver with ISPconfig, but not just now. Also: When I try to create a site in ISPconfig with the domain server1.domain1.de (thinking that that will take care of the warning about a non-existant server), ISPconfig tells me, that a server with that address already exists. I did not creat it though.