Remove client IP from sent emails
When sending a email out, Postfix adds the following lines:
Received: from MBP-van-Thom.localdomain (12-34-56-78.ip.xs4all.nl [12.34.56.78]) (Authenticated sender: thom@example.nl) by mail.example.com (Postfix) with ESMTPSA id D2C8D60059 for <someuser@gmail.com>; Thu, 4 Mar 2021 20:43:53 +0100 (CET)
I think it would be good to strip these lines from submitted emails, as it exposes the client's IP address.