From 3c634d27bb2b4e8fe89f1c5b997a51bc5e40ae6c Mon Sep 17 00:00:00 2001
From: Sven Göthel <sgothel@jausoft.com>
Date: Sun, 3 Mar 2024 05:49:16 +0100
Subject: Server sendmail.mc: Add confRECEIVED_HEADER: Hide authenticated
 sender details

---
 .../setup/05-service-settings/etc/mail/sendmail.mc   | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/server/setup/05-service-settings/etc/mail/sendmail.mc b/server/setup/05-service-settings/etc/mail/sendmail.mc
index 0f93cc0..79f8a91 100644
--- a/server/setup/05-service-settings/etc/mail/sendmail.mc
+++ b/server/setup/05-service-settings/etc/mail/sendmail.mc
@@ -168,6 +168,26 @@ dnl FEATURE(`allmasquerade')dnl
 FEATURE(`masquerade_envelope')dnl
 FEATURE(`masquerade_entire_domain')dnl
 
+dnl #
+dnl # RECEIVED_HEADER: Hide authenticated sender details
+dnl #
+define(`confRECEIVED_HEADER', `$?{auth_type}(from $j) by $j ($v/$Z)$|
+    $?sfrom $s $.$?_($?s$|from $.$_)
+    $.by $j ($v/$Z)$?r with $r$. id $i$?{tls_version}
+    (version=${tls_version} cipher=${cipher} bits=${cipher_bits} verify=${verify})$.$?u
+    for $u; $|;
+    $.$b$.')dnl
+dnl #
+dnl # Original RECEIVED_HEADER
+dnl #
+dnl # $?sfrom $s $.$?_($?s$|from $.$_)
+dnl # $.$?{auth_type}(authenticated$?{auth_ssf} bits=${auth_ssf}$.)
+dnl # $.by $j ($v/$Z)$?r with $r$. id $i$?{tls_version}
+dnl # (version=${tls_version} cipher=${cipher} bits=${cipher_bits} verify=${verify})$.$?u
+dnl # for $u; $|;
+dnl # $.$b
+dnl #
+
 dnl # use /etc/mail/local-host-names
 FEATURE(`use_cw_file')dnl
 dnl
-- 
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