diff --git a/data/conf/sogo/sogo.conf b/data/conf/sogo/sogo.conf
index 404fd451..bf79358a 100644
--- a/data/conf/sogo/sogo.conf
+++ b/data/conf/sogo/sogo.conf
@@ -46,7 +46,7 @@
     // 100 seems to break some Android clients
     //SOGoMaximumSyncWindowSize = 100;
     // This should do the trick for Outlook 2016
-    SOGoMaximumSyncResponseSize = 5172;
+    SOGoMaximumSyncResponseSize = 2048;
 
     WOWatchDogRequestTimeout = 10;
     WOListenQueueSize = 300;