dovecot-master-user-problem

//dovecot.conf
auth_master_user_separator = *
  passdb {
  driver = passwd-file
  args = /usr/local/etc/dovecot/passwd.master
  master = yes
  pass = yes
}
passdb {
  driver = shadow
}
userdb {
  driver = passwd
}
--> as instructed from http://wiki.dovecot.org/Authentication/MasterUsers

#cat passwd.master
master:{SHA}E9RIKlmYWisBS3ObR16GwKUZNZg=

# telnet localhost 143
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
a login loginuser*master mypassword
* OK Waiting for authentication process to respond..
* OK Waiting for authentication process to respond..
* BYE Disconnected for inactivity.
Connection closed by foreign host.