On 2022-03-18 12:35, I wrote:
I run postfix 3.4.14 (Debian Buster) with Amavisd-new as a pre-queue
filter.
...
Mar 18 11:42:53 nuser postfix/cleanup[8931]: warning: unsupported
dictionary type: pcre (/usr/lib/postfix/postfix-pcre.so: No such file
or directory)
Mar 18 11:42:53 nuser postfix/cleanup[8931]: warning:
pcre:/etc/postfix/pcre_milter_header_checks is unavailable.
unsupported dictionary type: pcre
I have now experimented more with "milter_header_checks", with the
following results:
* If cleanup is running chroot, then it seems that files needed for
"milter_header_checks" cannot be accessed outside the chroot jail. Files
needed for other header check variants seem to work fine also outside
the jail. No real problem: I've now simply turned off chroot for cleanup.
* Headers inserted by milters seem to be subjected to
"milter_header_checks" even if
receive_override_options=no_header_body_checks is set in the smtpd
stanza in master.cf. And that is just what I wanted.
Conclusion: As so often, it turns out that postfix, in this case
"milter_header_checks", can do what is needed. (Though it would be even
better if it also supported PREPEND.)
And thanks to Matus and PGNet Dev for interesting suggestions of
alternative solutions that I may need if my requirements change.
--
Jesper Dybdal
https://www.dybdal.dk
