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["John Levine" <address@concealed>]

>title.gettext All server users.
>
>CustomCondition::is_user([sender]) smtp,dkim,md5,smime    -> do_it
>true()                             smtp,dkim,md5,smime    -> reject

That's pretty close.  I want to allow people subscribed to list A to
post to list B.  I could do a separate is_user_list_foo() for each
list, but is there a way to pass an argument to a custom routine
like is_user so I can check for a specific list?

R's,
John