Error when creating Linked Mailbox

When creating a linked mailbox I get the following error:

In PowerShell:

Failed to resolve the linked master account and verify it exists in a forest different from the one hosting Exchange. T
he error messasge is : Failed to create a connection to any of the servers in the topology provider.

The scenario I have:

Domain-A.com (Resource domain where Exchange is placed)

Domain-B.local (separate domain where user objects are placed)

There’s a verified outgoing trust (forest transitive) where the Domain-B trusts Domain-A, the trust is verified and works, I can ping the DC of Domain-B from Domain-A and DNS resolves good.

Also all the necessary ports Exchange needs are opened in the firewall:

 53 88 137 139 389 445 464 636 3268-3269

I can successfully telnet to all this ports.

When I start the new Linked mailbox wizard I use an account with admin privileges in the Domain-B, at the moments the Account is being verified I get the mentioned error.

 

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Technical Specialist