From 4e886d95855558633e6d398b0cb7150e9f1476b2 Mon Sep 17 00:00:00 2001
From: pacien
Date: Mon, 3 Sep 2018 04:25:16 +0200
Subject: Define DKIM header macro if not set

---
 conf.d/040_transports.conf | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/conf.d/040_transports.conf b/conf.d/040_transports.conf
index 94d9b88..5a2d389 100644
--- a/conf.d/040_transports.conf
+++ b/conf.d/040_transports.conf
@@ -26,6 +26,11 @@ remote_smtp:
 # The "Sender" header is excluded from the signature process, allowing mailing list
 # servers to forward messages without invalidating the signature.
 # ref: https://www.spinics.net/lists/linux-media/msg138870.html
+
+.ifndef _DKIM_SIGN_HEADERS
+_DKIM_SIGN_HEADERS = In-Reply-To:Content-Transfer-Encoding:Content-Type: MIME-Version:References:Message-ID:Subject:To:From:Date:Sender:Reply-To:Cc: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive
+.endif
+
 signed_smtp:
   driver             = smtp
   message_size_limit = ${if > {$max_received_linelength}{998} {1}{0}}
-- 
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