[Minor] Add letsencrypt to spf_dkim_whitelist

diff --git a/conf/spf_dkim_whitelist.inc b/conf/spf_dkim_whitelist.inc
index 593248c75e2db11d468ca7daef598ec52d1cadbf..fd7cf355ade605d8f87468f77e9c4b017ca20fa7 100644 (file)
--- a/conf/spf_dkim_whitelist.inc
+++ b/conf/spf_dkim_whitelist.inc
@@ -111,6 +111,7 @@ kayak.com
 kickstarter.com
 kijiji.ca
 kotaku.com
+letsencrypt.org
 libero.it
 lifehacker.com
 likes.com