How to hide Postfix Headers


1. edit/create - # nano header_checks.pcre
2. ADD next Lines:

/^Received:/         IGNORE
/^User-Agent:/       IGNORE
/^X-Mailer:/         IGNORE
/^X-Originating-IP:/    IGNORE
/^X-PHP-Originating-Script/ IGNORE

3. ADD next Lines:

smtpd_sasl_authenticated_header = yes
smtp_header_checks = pcre:/etc/postfix/header_checks.pcre 

to main.cf

        -o header_checks=pcre:/etc/postfix/header_checks.pcre
to master.cf just after cleanup instruction


4. Restart postfix

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