Hello its my first post, so i'm sorry if I do anything wrong.
I'm having the exact same problem here...
During the installation i receive the msg:
DNS ERROR resolving debian.IMAGINE.corp
It is suggested that the hostname be resolveable via DNS
Re-Enter hostname [Yes]
I'm on an educational institution which Internet domain(for the emails) is EXAMPLE.edu.br(like, the website should be www.example.edu.br) and my Active Directory is using IMAGINE.corp as the local network domain.
Since this webmail will have external access(Internet), I'd like to know what to do.
In my /etc/hosts file, it has:
XXX.YYY.QQQ.EEE debian.EXAMPLE.corp debian
So, in AD I tried and created an MX record in the DNS zones called debian.example.corp, returned to the installation and tried again... Didn't work...
It keeps asking me to "Re-Enter hostname"...