Originally Posted by skoena
When I installed the new server I choosed a new hostname can this be the problem?
Yes. You need to check all your web-domains and ispconfig server setting about your new hostname and select it, if it itn.
1. set new hostname in server-settings (dont know the location exactly, but it looks like that:
2. select each web-domain which should run on that hostname and select the same hostname as in 1. created.
3. check if you select IP-settings for your domains. somewhere in this forum i read to only use IPs in every domain or not to use any IP-adress. not mixed.