ERR: USER command only available under a layer

[Christian Cernuschi]

i'm setting an imap server under gentoo but i get this error
what does it mean?
thanks in advice
bye


lyra root # telnet localhost 110
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
+OK lyra Cyrus POP3 v2.1.12 server ready <1210328575.1061987199 at lyra>
user prova
-ERR [AUTH] USER command only available under a layer