From f60cb022df4a5c5fca507c103d97638971e63ae2 Mon Sep 17 00:00:00 2001
From: Mark Sapiro
Date: Sat, 5 Nov 2016 09:09:14 -0700
Subject: msgdata['moderation_reasons'] is a list.

---
 src/mailman/rules/dmarc.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mailman/rules/dmarc.py b/src/mailman/rules/dmarc.py
index b22d50ea3..d7e826fe8 100644
--- a/src/mailman/rules/dmarc.py
+++ b/src/mailman/rules/dmarc.py
@@ -251,7 +251,7 @@ class DMARCModeration:
             msgdata['dmarc'] = True
             if mlist.dmarc_moderation_action == DMARCModerationAction.discard:
                 msgdata['moderation_action'] = 'discard'
-                msgdata['moderation_reasons'] = _('DMARC moderation')
+                msgdata['moderation_reasons'] = [_('DMARC moderation')]
             elif mlist.dmarc_moderation_action == DMARCModerationAction.reject:
                 listowner = mlist.owner_address       # noqa F841
                 reason = (mlist.dmarc_moderation_notice or
-- 
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