making a single address nonexistent

[martin f krafft [Permanent Link]]

Hi,

I have a catchall virtual domain and I would like to make *one*
*single* address in that domain nonexistent, such that mails to that
address get refused by postfix with a 5xx error; mail to all other
addresses @that.domain should be delivered to the catchall
destination.

What do I have to use on the right-hand side of the virtual alias
map for this? Or is there another way?

Thanks,

-- 
martin;              (greetings from the heart of the sun.)
  \____ echo mailto: !#^."<*>"|tr "<*> mailto:"; net@madduck
 
... with a plastic cup filled with a liquid that was almost,
but not quite, entirely unlike tea.
            -- douglas adams, "the hitchhiker's guide to the galaxy"
 
spamtraps: madduck.bogus AT madduck DOT net

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