Let's start with the DNS validations; first, we'll validate the SOA and NS records for our poa.msdcbrz.eall.com.br
domain as follows:
leal@debian7:~$ dig -t any poa.msdcbrz.eall.com.br … ;; ANSWER SECTION: poa.msdcbrz.eall.com.br. 900 IN A 192.168.1.1 poa.msdcbrz.eall.com.br. 3600 IN NSdebian7.poa.msdcbrz.eall.com.br. poa.msdcbrz.eall.com.br. 3600 IN SOAdebian7.poa.msdcbrz.eall.com.br. hostmaster.poa.msdcbrz.eall.com.br. 52 900 600 86400 3600 …
Now let's see how the entries are for _msdcs.poa.msdcbrz.eall.com.br
:
… dig -t any _msdcs.poa.msdcbrz.eall.com.br ;; ANSWER SECTION: _msdcs.poa.msdcbrz.eall.com.br. 3600 IN NSdebian7.poa.msdcbrz.eall.com.br. _msdcs.poa.msdcbrz.eall.com.br. 3600 IN SOAdebian7.poa.msdcbrz.eall.com.br. hostmaster.poa.msdcbrz.eall.com.br. 30 900 600 86400 3600 …