Hi Andy,
I simplified things a bit so we don't rely on DNS at all for the majority of cases (anything that looks like a FQDN) but still handles the case reported by @simonmichal.
The problem with using the trick of appending a . is that it still relies on DNS - hence exposing the security issue we were trying to avoid in the first place.
With this, I believe things are secure by default except in detectable backward compatibility scenarios.
Brian
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