It works like this: when you create the web site www.anywebshop.nl
, the Co-Domain anywebshop.nl is created automatically so that you can access your web site using http://www.anywebshop.nl
Every user you create has then email addresses like email@example.com
If you remove the Co-Domain anywebshop.nl, then you can't use http://anywebshop.nl
anymore to reach your web site, and your user can receive emails only under firstname.lastname@example.org
If you use an external mail server, then you have to tell www.anywebshop.nl
and anywebshop.nl to use this external mail server. If you do this only for www.anywebshop.nl
, then emails for anywebshop.nl will still arrive on your server.