this is a curiosity: generally i use at sign '@' instead of domain into domain records, as here http://www.zytrax.com/books/dns/ch8/ Code: @ ; replace with the current value of $ORIGIN but use of '@' in name field of dns forms is not allowed.. or am i missing something?
ISPCnfig supports different DNS Servers, not just BIND. Other servers dont know the @ placeholder, so ISPConfig requires that you insert the origin as domain to be compatible with all supported dns servers.