This authentication method stores user accounts in a relational database, e.g. MySQL or PostgreSQL.
rdbms method uses an outgoing connection pool of type
rdbms with the
default tag - it has to be defined in the
[auth] methods = ["rdbms"]
[outgoing_pools.rdbms.default.connection] driver = "pgsql" host = "localhost" database = "mongooseim" username = "mongooseim" password = "mongooseim_secret"