access_rules for unsubscription of non-subscribed addresses

"Roger B.A. Klorese" <[email protected]>
Newsgroups gmane.mail.majordomo.majordomo2.devel
Message-ID <[email protected]>
Is it possible to detect in an access_rule when someone is trying to 
unsubscribe from something they're not subscribed to?

And is it or would it be possible to detect when a command comes into 
the email interface interactively vs. via an alias expansion?
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