michael on Nostr: I must be missing something… relays also use dns don’t they? how would a mint ...

I must be missing something…

relays also use dns don’t they?
how would a mint loose their dns for the mint but not for their relay?

https://mint.mydomain.com
vs
wss://relay.mydomain.com

if they use a third party relay… then multiple mint could go offline by attacking that shared relay?