Heya, thank you for suggesting strfry, I didn't know about this software at all, and it looks it's way simpler, and I believe it'll cover my needs since it has whitelist plugin!

https://github.com/hoytech/strfry/blob/master/docs/plugins.md#example-whitelist

Oh and, THANK YOU for damus.io relay and other contributions too. I'm quite new to nostr, but I think it's maintained by you and it's one of the biggest relays so your contribution to the ecosystem so far is definitely invaluable!