Certificate problems Remote host external domain with wildcard certificate

Hello

I have two hosts which have the following roles installed (both servers have  the same roles ) and my clients only connect externally, never internally. The servers are the same configured with these roles.

- Connection broker

- Gateway

- Web App

- Host session

I have configured them to connect through a rd gateway (terminal.externaldomain.com) and set up a server farm (rdfarm.external domain.com). I have a certificate issued by thawthe for the domain * .externaldomain.com. 

I attached the url to you to see a capture, it does not let me put it in the forum.

http://www.atm2.es/soporte/captura1.png

Everything is fine (in fact the clients are connecting now) but sometimes and without any evident pattern, the connection  trying to connect to the internal name of the server rdsh1.internaldomain or rdsh2.internaldomain.com. I tried to pass the script to rename the name of the server but it rename me the name of the farm, not the server. In fact I do not understand why this behaviour  because as you see in the first capture  

 I put the url does not let me put images, see url below) the remote computer is rdfarm.externaldomain.com and the second is already madprdts01.localdomain.com

http://www.atm2.es/soporte/captura2.png

Also and in relation to this I have an error 0x607 of authentication from time to time that is solved only entering from the client a second time and it is fixed alone.


I believe that everything is related to the problem of certificates, but I am a little lost and I do not know what to do anymore.

I appreciate your collaboration

Thank you so much