Originally Posted by nabuk
but by selecting default mx creation i should have:
MX 10 ns.test.com
www MC 10 ns.2bite.net
mail A server_ip
Please go to the Co-Domains tab and select test.com (without www), and then enable Default MX for test.com, too. Please remember: www.test.com
!= test.com. Up to now, you created an MX record for www.test.com
, not for trst.com, and that's what you have in your zone file, so everything is ok.
If subdom.domain.com should point to the domain.com web site, then you can add subdom.domain.com as a Co-Domain to the domain.com web site, and you will automatically have email addresses such as firstname.lastname@example.org
If subdom.domain.com and domain.com are different web sites, simply create a new web site for subdom.domain.com in ISPConfig and then create email accounts for it.