[Samba] AD DC DNS test resolves as alias

[Henry]

New Samba installation.
Using the following guide and stuck at the DNS testing:
https://wiki.samba.org/index.php/Setting_up_Samba_as_an_Active_Directory_Domain_Controller#Verifying_DNS

This is what I should receive according to the docs:

host -t SRV _ldap._tcp.samdom.example.com.
_ldap._tcp.samdom.example.com has SRV record 0 100 389 dc1.samdom.example.com.

What I get:

host -t SRV _ldap._tcp.int.ourdomain.com.au.
_ldap._tcp.int.ourdomain.com.au is an alias for ourdomain.com.au.