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-rw-r--r--synapse/api/auth.py6
1 files changed, 6 insertions, 0 deletions
diff --git a/synapse/api/auth.py b/synapse/api/auth.py
index 022211e34e..55384d6ffe 100644
--- a/synapse/api/auth.py
+++ b/synapse/api/auth.py
@@ -783,6 +783,12 @@ class Auth(object):
             user_id(str|None): If present, checks for presence against existing
             MAU cohort
         """
+
+        # Never fail an auth check for the server notices users
+        # This can be a problem where event creation is prohibited due to blocking
+        if user_id == self.hs.config.server_notices_mxid:
+            return
+
         if self.hs.config.hs_disabled:
             raise ResourceLimitError(
                 403, self.hs.config.hs_disabled_message,