Your comments

I mean that my server ist on "host 1" on "hoster 1"
and my friends domain is on "host2" on "hoster 2" (Host2 doesn't have mailserver)

The Webserver and Mailserver are on "Host1", so we want that we can send mails, with the Domain from "Host2".
Thanks for you fast answer.

Could u maybe give me an example, what i should add in Bind9, that the mailserver is local, but the domain external ?

already tried some things, but couldnt get it to work. Not sure if i need to add a new zone or add the mx record like mailserver ip to an existing zone.


Greetings Pierre