config.m4 (dkim_headers): Reinstate the spaces around the header names.

diff --git a/config.m4 b/config.m4
index 52339b330ebb5dcbc3e27c3005eeee0ca87a45a1..99ddc86336660f5f20338da5c06659c852bd568a 100644 (file)
--- a/config.m4
+++ b/config.m4
@@ -82,11 +82,12 @@ DEFCONF(relay_clients, <m4_dnl
 
 ## DKIM headers list.
 ## Surprise!  Internal whitespace isn't allowed here.
-DEFCONF(dkim_headers,m4_dnl
-References:In-Reply-To:Subject:To:Date:Message-ID:m4_dnl
-From:Sender:Reply-To:Cc:m4_dnl
-Content-Transfer-Encoding:Content-Type:MIME-Version:m4_dnl
-Content-ID:Content-Description)
+DEFCONF(dkim_headers, m4_dnl
+References : In-Reply-To : Subject : To : Date : Message-ID : m4_dnl
+From : Sender : Reply-To : Cc : m4_dnl
+Content-Transfer-Encoding : Content-Type : MIME-Version : m4_dnl
+Content-ID : Content-Description m4_dnl
+)
 
 ## TLS certificate list.
 DEFCONF(certlist,