Postfix configuration leaks IP addresses

[thomasoll]

As it stands, the configuration (which is excellent by the way) leaks the source ip of the sender.
Recommend you amend the following files to strip the "Received From:" section of this:

add to /etc/postfix/main.cf
header_checks = regexp:/etc/postfix/header_checks

create file /etc/postfix/header_checks and add:

/^Received:.*/     IGNORE
/^X-Originating-IP:/    IGNORE

[thomasoll]

Before:
Received: from [192.168.1.99] (mypc.lan [185.14.xxx.xxx])

After:
``

[Fijxu]

I also changed these settings months ago after I realized that the headers of the emails I was sending were leaking my external ip.
It would be good for privacy if by default the configuration would not read the external ip of the sender.

[programmer-ke]

Not an expert, but I spent some time looking into this. Just in-case in may not be obvious to anyone looking at this, the headers will be stripped for both incoming and outgoing emails.

It may not matter to most people, but if you only want to strip the sending client's headers, see this for a possible solution: https://serverfault.com/a/998993