Content scanning: Fix locking on message spool files. Bug 2275

[users/heiko/exim.git] / doc / doc-txt / experimental-spec.txt

diff --git a/doc/doc-txt/experimental-spec.txt b/doc/doc-txt/experimental-spec.txt
index 481af1a9b08e044e6d92b90b0e04f67b717db24a..15df152676844c9dcd5dece3ea648ec2edd7a997 100644 (file)
--- a/doc/doc-txt/experimental-spec.txt
+++ b/doc/doc-txt/experimental-spec.txt
@@ -799,6 +799,15 @@ There are three new variables: $arc_state, $arc_state_reason, $arc_domains:
   $arc_state_reason    (if fail, why)
   $arc_domains         colon-sep list of ARC chain domains, in chain order.
                        problematic elements may have empty list elements
+  $arc_oldest_pass     lowest passing instance number of chain
+
+Example:
+  logwrite = oldest-p-ams: <${reduce {$lh_ARC-Authentication-Results:} \
+                               {} \
+                               {${if = {$arc_oldest_pass} \
+                                       {${extract {i}{${extract {1}{;}{$item}}}}} \
+                                       {$item} {$value}}} \
+                           }>
 
 Receive log lines for an ARC pass will be tagged "ARC".