From 190b0d0fcb9736995c3475a684d2a5e9761d122a Mon Sep 17 00:00:00 2001
From: Christoph <ckubu@oopen.de>
Date: Mon, 13 Nov 2023 09:22:18 +0100
Subject: [PATCH] install_postfix_advanced.sh: add message headers that include
 information about the protocol and cipher used.

---
 install_postfix_advanced.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/install_postfix_advanced.sh b/install_postfix_advanced.sh
index 9d7660e..a0ccbe1 100755
--- a/install_postfix_advanced.sh
+++ b/install_postfix_advanced.sh
@@ -1887,6 +1887,10 @@ smtpd_tls_exclude_ciphers =
 smtpd_tls_session_cache_database = btree:\${data_directory}/smtpd_scache
 smtp_tls_session_cache_database = btree:\${data_directory}/smtp_scache
 
+
+# produce Received: message headers that include information about the protocol and cipher used
+smtpd_tls_received_header = yes
+
 EOF
 if $IS_RELAY_HOST ; then
    cat <<EOF >> /etc/postfix/main.cf