Dead relays is a serious issue on Nostr. It results in users losing their data, especially when there are few migration tools and clients doesn't automatically re-publish when changing relays.
If you login to #Nostria now with a known dead relay, you'll get this notification at the bottom of the app:
On the Account Relays there is also a very clear indicator if you're using a dead relay. I found
@59fbee73โฆ84cb770f has a few of them... maybe time to update?
Next quest is how do you find relays? That is coming very soon!
Adding this to #asknostr if anyone wonder how to clean up their #nostr relays.