ARC: relax restriction on building without SPF

diff --git a/doc/doc-txt/experimental-spec.txt b/doc/doc-txt/experimental-spec.txt
index 373d9dc4c583b016fcefb6939ffaa8dfe7b6987a..3b8a73428c454d4cf3a8e95a7420388a31ecdc2a 100644 (file)
--- a/doc/doc-txt/experimental-spec.txt
+++ b/doc/doc-txt/experimental-spec.txt
@@ -585,6 +585,13 @@ identify the ADMD.  Messages should be ARC-verified on entry to the ADMD,
 and ARC-signed on exit from it.
 
 
+Building with ARC Support
+--
+Enable using EXPERIMENTAL_ARC=yes in your Local/Makefile.
+You must also have DKIM present (not disabled), and you very likely
+want to have SPF enabled.
+
+
 Verification
 --
 An ACL condition is provided to perform the "verifier actions" detailed

diff --git a/src/src/arc.c b/src/src/arc.c
index b7fcb116a34c02b8f72b401e9d7bbb52e22b9bea..52c1c7625a8a0d0d10c78f3a1f87c0d9f6ac4156 100644 (file)
--- a/src/src/arc.c
+++ b/src/src/arc.c
@@ -7,10 +7,7 @@
 */
 
 #include "exim.h"
-#ifdef EXPERIMENTAL_ARC
-# if !defined SUPPORT_SPF
-#  error SPF must also be enabled for ARC
-# elif defined DISABLE_DKIM
+# if defined DISABLE_DKIM
 #  error DKIM must also be enabled for ARC
 # else
 
@@ -1862,7 +1859,7 @@ return g;
 }
 
 
-# endif /* SUPPORT_SPF */
+# endif /* DISABLE_DKIM */
 #endif /* EXPERIMENTAL_ARC */
 /* vi: aw ai sw=2
  */