More details on postfix mail log

a2940uw

Hi,
I using a Graylog appliance success to receive mail log send from the mailcow server without problem, I would like to the log message can output more details such as mail subject, I know postfix can use use the smtp_header_checks to do this, and I updated the syntax “ :/^subject:/ WARN” to the postfix file “anonymize_headers.pcre” , this is allowed and how to reload this file ? or restart the postfix container should be ok ?
Thanks

a2940uw

I was followed the tutorial https://mailcow.github.io/mailcow-dockerized-docs/u_e-postfix-extra_cf/ to expand the main.cf and then apply extra config header_checks = regexp:/opt/postfix/conf/header_checks , now all mail log including the subject header.

mailcowUser0815

It dosn’t work for me. Has anyone an idea?

This are my commands:

cd /opt/mailcow-dockerized/

nano data/conf/postfix/extra.cf
Insert:
header_checks = regexp:/opt/postfix/conf/header_checks

nano data/conf/postfix/header_checks
Insert:
/^Subject:/     WARN

docker-compose exec postfix-mailcow postmap /opt/postfix/conf/header_checks

docker-compose restart postfix-mailcow

But the postfix log contains no subject.