On Fri, Mar 08, 2024 at 09:23:19PM +0200, Mailinglists35 via Postfix-users
wrote:
> The postmap input looks like this:
>
> echo -e "Received: from [127.0.0.1] (web1dev [10.11.12.13])\n\tby
> email.domain.tld (Postfix) with ESMTPS id C9056
> 7E002\n\tfor <em...@gmail.com>; Fri, 8 Mar 2024 19:20:29 +0200 (EET)"
> | postmap -q - pcre:/etc/postfix/header_checks
> Received: from [127.0.0.1] (web1dev [10.11.12.13]) REPLACE Received:
> from email.domain.tld (email.domain.tld. [1.2.3.4])
>
> What I am doing wrong?
The problem is with the "postmap" command, not the regular expression.
$ printf "foo\nbar\n" | postmap -q - "pcre:{{/foo/ a}, {/bar/ b}}"
foo a
bar b
By default, postmap reads a separate key from each input line. For
simulating reading of message headers, you need the "-h" option:
$ printf "X: foo\n\tbar\n" | postmap -hq - "pcre:{{/foo.*bar/ a}, {/bar/
b}}"
X: foo
bar a
And you DO NOT want or need a "/m" option for your pattern. Your use of
"^" should match only at the start of the logical header, not at the
start some folded line.
--
Viktor.
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