From f3aeab91198e5619bc4f79014f9d7d23de402ae7 Mon Sep 17 00:00:00 2001
From: Travis Ralston <travisr@matrix.org>
Date: Thu, 10 Mar 2022 21:08:53 -0700
Subject: [PATCH] Don't send presence to matrix.org

---
 synapse/federation/sender/__init__.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/synapse/federation/sender/__init__.py b/synapse/federation/sender/__init__.py
index a6cb3ba58f0b..6f91a785418f 100644
--- a/synapse/federation/sender/__init__.py
+++ b/synapse/federation/sender/__init__.py
@@ -695,6 +695,11 @@ def send_presence_to_destinations(
         for destination in destinations:
             if destination == self.server_name:
                 continue
+
+            # T2B: Skip sending presence to servers we know don't support it
+            if destination == "matrix.org":
+                continue
+
             if not self._federation_shard_config.should_handle(
                 self._instance_name, destination
             ):