While your suggested code is a good solution; I was thinking along the lines of being able to match more than just an empty string for each case. So List::MoreUtils could be used to express the code this way:
help() unless all { $_ } $server, $user, $database, ...
or without List::MoreUtils:
help() unless $server && $user && $database ..
but I still think that the original code makes it very clear what is going on and provides future flexibility. I tend to believe that code golf and maintainablity are often at odds.
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