service/forum.md

@@ -164,6 +164,16 @@ https://meta.discourse.org/t/partial-read-only-mode/210401/18
 
 ## Pager playbook
 
+If mail is not going out or some recurring background job doesn't
+work, see the Sidekiq dashboard in:
+
+<https://forum.torproject.org/sidekiq/>
+
+Email failures, in particular, are retried for a while, you should be
+able to see those failures in:
+
+<https://forum.torproject.org/sidekiq/retries>
+
 ## Disaster recovery
 
 In case the machine is lost, it's possible to restore the forum from backups.