From: Wietse Venema (wietseporcupine.org)
Date: Wed Oct 01 2008 - 06:52:55 CDT

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David DeFranco:
> According to the man page I can't do regular expression substitution in
> transport maps with Postfix 2.3 or later.
>
> The trivial-rewrite(8) server disallows regular expression
> substitution of $1 etc. in regular expression lookup
> tables, because that could open a security hole (Postfix
> version 2.3 and later).

Of course it's equally dangerous with earlier Postfix releases.

> Is there a way to override this setting or am I stuck running Postfix 2.2?

I recommend that you stop using regexp substitutions in transport maps.

        Wietse

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