Source or target Exchange organization can not be added within QMM (4352461)

All servers in source or target organization are located behind a firewall except for one server,  however the  tool is attempting  to connect to another server which is behind  the firewall.
Is there a workaround?

When adding and enumerating an organization the wizard allows to specify a Domain Controller instead of domain.

As documentation says:
Specify the name of the domain where your Exchange servers are located.
You can also specify the name of the domain controller for this domain.
The domain controller name should be specified in the \\domain_controller_name format.
The wizard will enumerate the users of the specified domain and register in Migration Manager all the Exchange servers where the users' mailboxes are homed.
You can select to add to Migration Manager the recipients of the specified domain only.
The account you specify should have administrative privileges on the selected domain controller.