Postfix: Removing Received headers from Outgoing messages

balip · Sep 15, 2013

I have been testing smtp_header_checks, without much success.

Setup #1

In /etc/postfix/checks_smtp_headers

Code:

/^Message-id:/i	IGNORE

Code:

# postmap /etc/postfix/checks_smtp_headers

In /etc/postfix/main.cf

Code:

smtp_header_checks=pcre:/etc/postfix/checks_smtp_headers

Code:

# service postfix restart

When I send an email, the message-id header is still present in the headers.

Setup #2

I removed the smtp_header_checks line from main.cf

Instead I added the following in master.cf

Code:

smtp	inet	n	-	-	-	-	smtpd
 -o smtp_header_checks=pcre:/etc/postfix/checks_smtp_headers
 -o syslog_name=headerchecks

Code:

# service postfix restart

Still, no stripping of the message-id header.
Nothing in /var/log/syslog indicates that headerchecks was executed.

Setup #3

I tried the following in master.cf

Code:

submission	inet	n	-	-	-	-	smtpd
 -o smtp_header_checks=pcre:/etc/postfix/checks_smtp_headers
 -o syslog_name=headerchecks

Code:

# service postfix restart

No more success.

Why is this not working?

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Postfix: Removing Received headers from Outgoing messages

balip

Programmer

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