[Samba] Problem joining second DC --- replicated DC on two sites.

[Bruno Andrade]

Hey everyone,

I was trying to add a second DC to my controller via 'samba-tool domain 
join' tool.
Well, everytime, some error appears, and it says the joining was not 
possible. I look over the internet, and then, I tried to join the domain 
again, but this time, to a specific Site... the same error.

When I enter the AD tools on windows, for my surprise, I get this:

http://imgur.com/tSNUSno

Who can I delete, one or both, replicated DCs?

Kind Regards,
Bruno.