Active Directory Trust - 2012 to 2003 - Failing to Access Resource

Hello

Forest A - 2012 R2 Forest - All DC's 2012R2
Forest B - 2012 R2 Forest - 2012R2/2008R2 DC's
Forest C - 2003 R2 Forest - 2003 R2 and below DC's and File servers

All Trusts are External Trusts - Forest wide auth

I can connect to resources in Forest B from Forest A with no problems.
I can connect to only one DC in Forest C (Netlogon Share) from Forest A.  When I try to connect to other DC's Netlogon shares or File Server shares in Forest C from Forest A, I get Access Denied or no RPC Server Available.

Thank you
nico-Asked:
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KoenChange and Transition ManagerCommented:
Did you look at this :
this
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nico-Author Commented:
Hello Ghinstek

The Trust has already been created.  It's not a question of can it be done.  It's a question of why can only one DC be connected to (Netlogon share) and no other DC's or FileShares can.  

Thanks
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nico-Author Commented:
Unless you're referring to the bottom most comment on the link.. ?
I haven't tried that.  Very interesting.  Will take a while to verify as it's an external company.
Thanks
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KoenChange and Transition ManagerCommented:
i was indeed referring to the last comment, sorry if it was unclear
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