Can't use RhostsRSAAuthtication

[luke]

Hi everyone,     I can use RhostsAuthentication and RSAAuthentication separately.But I can't use RhostsRSAAuthentication.     I get the following message:   debug1: Trying rhosts with RSA host authentication for client user luke debug1: Rhosts RSA authentication: canonical host vpneast debug1: Rhosts with RSA host authentication denied: unknown or invalid host key Failed rhosts-rsa for luke from 168.200.166.166 port 808 ruser luke       I don't know what's wrong with my configure.Does someone know how I do with it?     Thanks in advance.Sorry for my poor English.