Do I need to configure something to make push notifications work with self hosted relay?

I set up my relay using these instructions Setting up a chatmail relay - chatmail relay documentation . But I ran into the problem that I don’t receive notifications on android if the app is not open. As I understand it, delta chat supports push notifications. Do I need to configure something on the self hosted relay side to make push notifications work? In the android app Logs, I see push-enabled=true and push-token=fcm-chat.delta:... Android version: 11, App version: Delta Chat 2.48.0-gplay

in theory if you have a push-token it then should work since chatmail relays automatically integrate with the push notifications service, maybe there is a bug somewhere

It’s working for my relay out of the box, try testing host notifications.delta.chat (resolving and connectivity from your server)

I can ping and also make https requests to this address from the server. Maybe there are some logs on the server that I can check?

I checked through tcpdump that after sending the message on the client, the server sends some packets to notifications.delta.chat. But the notifications on the phone are still not coming. Do I understand correctly that push notifications should work even without a constant background connection?