HI, When i add a new domain, the ispconfig create in file /etc/postfix/local-host-names and /etc/postfix/virtusertable something like www.domain.test. Only interests me that it adds the domain not the sub-domain www. Best Regards,
Thats not a good idea. In this case ISPConfig will fill the host field automatically and some functions will fail. One solution is to set mailserver to external in the website but not in the co-domain.