Better handle 404 response for federation /send/

1 files changed, 1 insertions, 0 deletions

diff --git a/synapse/federation/transaction_queue.py b/synapse/federation/transaction_queue.py

index d18f6b6cfd..cb106c6a1b 100644
--- a/synapse/federation/transaction_queue.py
+++ b/synapse/federation/transaction_queue.py
@@ -319,6 +319,7 @@ class TransactionQueue(object):
                     destination,
                     self.clock,
                     self.store,
+                    backoff_on_404=True,  # If we get a 404 the other side has gone
                 )
 
                 device_message_edus, device_stream_id, dev_list_id = (