I would like to get certificates for the same domain from 2 different servers, using DNS challenge. In my setup it is not convenient to synchronize certificates or accounts between this servers, getting separate certificates using different letsencrypt accounts is much easier.
Does Letsencrypt allow such usage? Or will it block the domain and both accounts?
What is the limit exactly? After you mentioned the word "limit", I've found this doc: https://letsencrypt.org/docs/rate-limits/ but it doesn't say anything about getting certificates for same domain from different accounts.