On 13/01/23 08:40, Viktor Dukhovni wrote:
On Thu, Jan 12, 2023 at 01:49:33PM -0500, post...@ptld.com wrote:
My solution...
main.cf:
smtp_header_checks = pcre:/etc/postfix/header_checks_smtp
/etc/postfix/header_checks_smtp:
/^Received:/ IGNORE
/^X-Originating-Ip:/ IGNORE
That's a rather radical "solution". More typically one would just drop
"Received" headers known to be added by the local MTA (matching the
hostnname in "by" clause explicitly). As for "X-Originating-Ip:", if
you're the one not adding it, why remove it? And if you are adding it,
then why, if only to remove it?
Perhaps:
/^(Received:.*)192\.168\.1\.2(.*)$/ REPLACE ${1}127.0.0.2${2}
Substitute your server's IP address for 192\.168\.1\.2 above, and it
should replace that IP with 127.0.0.2 in any Received headers. Since
you're explicitly telling it to only match and replace the exact IP
address of your server the rest of the header should remain intact and
troubleshooting should still be relatively easy. Note that I explicitly
used 127.0.0.2 for the IP address to replace with since it's a
legitimate loopback address, but it's easy to identify it as the one
that got replaced because other references to the loopback address will
be 127.0.0.1. Modify to suit.
Peter
