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Question Remove/hide client sender agent and ip from postfix

Hausherr

New Pleskian
How can I remove/hide the User-Agent and the ip address from postfix in the mail header without plesk overwrite the Postfix configuration?
 
Thanks for the feedback. How do I manage to remove the sender IP from the authentication results?
The entry '/^Authentication-Results:\s+.*/ IGNORE' in /etc/postfix/header_checks does not take effect.

The entry ’header_checks = pcre:/etc/postfix/header_checks’ in '/etc/postfix/main.cf' is really no overwritten by Plesk, if I set with the command 'postconf -e "header_checks = pcre:/etc/postfix/header_checks"'?
 
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