Use servers list approx to send read receipts when in partial state (#14549)

Signed-off-by: Mathieu Velten <mathieuv@matrix.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/synapse/federation/sender/__init__.py b/synapse/federation/sender/__init__.py

index fc1d8c88a7..30ebd62883 100644
--- a/synapse/federation/sender/__init__.py
+++ b/synapse/federation/sender/__init__.py
@@ -647,7 +647,7 @@ class FederationSender(AbstractFederationSender):
         room_id = receipt.room_id
 
         # Work out which remote servers should be poked and poke them.
-        domains_set = await self._storage_controllers.state.get_current_hosts_in_room(
+        domains_set = await self._storage_controllers.state.get_current_hosts_in_room_or_partial_state_approximation(
             room_id
         )
         domains = [