Michael Storz:
> seems I was
> not able to show the underlying problem, let me rephrase my problem:
> 
>          How can I configure arbitrarily complex if-then-else constructs
>          for every possible table type?

You will have to outsource that logic with tcp_table lookups.

Considering that if-then-else table search is useful for maybe
0.0001% of the installed base, I don't think it makes no sense to
spend significant of development resources on it now, and to spend
maintenance resources on it for eternity. There is a lot that needs
to be done and that benefits most of the installed base.

Yes, I suppose that it's possible to emulate conditional processing
with magical query keys and magical lookup results. No, I don't
think that restriction_classes is an example that deserves expansion.

References: 
http://www.postfix.org/tcp_table.5.html

        Wietse

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