Mendoza, Gerardo:
> I have a problem with address rewriting with the following configuration
>
> main.cf:
> recipient_canonical_maps = regexp:/etc/postfix/test
>
> /etc/postfix/test:
> /([1-9]+)test/ 5${1}numbers.test
> /([A-z]+)test/ ${1}names.test
>
> In the case that the recipient is a number, for example: 678test, i want
> postfix to rewrite the address as
> 5678numbers.test, my problem is that it rewrites it as:
> 5555555555678numbers.test (that?s ten times 5 instead of just one!)
> Does anyone have a clue on why is this happening?

Postfix address mapping lookup tables are used recursively. This
ought to be a flag that you can specify along with the map, but
that has not yet been implemented. If I would finish Postfix before
release, then no-one would be able to use the software.

Right now, Postfix terminates recursion after 10 steps, or when
the result matches the input.

So, if your numerical addresses have exactly three digits, then
you can do your substitution with:

        /^([0-9]{3})test$/ 5$1numbers.test

However, if your numbers have variable length, say, 1-3 digits,
you would be stuck with something like:

        /^([0-9]{1,3})test$/ 5$1numbers.test

All numerical addresses would be prefixed with 5s until they all
have the same four-digit length.

        Wietse

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