[Dovecot] pop3 authentication failure - password mismatch

[James Sun]

I tried to run dovecot 1.0 built by myself but encountered the above problem.

See the error traces below.  First of all, the password and user are
correct, as it worked with the 0.99 rpm version of dovecot.  I also
hand verified with ssh.

I also attached the dovecot config file below.  Any ideas?

Jun

fetchmail output on client:
-------------------------------------
fetchmail: POP3< +OK Dovecot ready.
fetchmail: POP3> CAPA
fetchmail: POP3< +OK
fetchmail: POP3< CAPA
fetchmail: POP3< TOP
fetchmail: POP3< USER
fetchmail: POP3< UIDL
fetchmail: POP3< RESP-CODES
fetchmail: POP3< PIPELINING
fetchmail: POP3< SASL PLAIN
fetchmail: POP3< .
fetchmail: POP3> USER jam
fetchmail: POP3< +OK
fetchmail: POP3> PASS *
fetchmail: POP3< -ERR Authentication failed.
fetchmail: Authentication failed.

maillog on dovecot server:
--------------------------------------
Jul 22 18:28:18 hsiufen dovecot: auth(default):
passwd(jam,24.6.106.170): password mismatch
Jul 22 18:28:19 hsiufen dovecot: pop3-login: Aborted login [24.6.106.170]
Jul 22 18:29:32 hsiufen dovecot: Killed with signal 2

dovecot.conf
------------------
protocols = imap imaps pop3 pop3s
listen = *
ssl_disable = no
disable_plaintext_auth = no
protocol imap {
  login_executable = /root/local/encap/dovecot-1.0/libexec/dovecot/imap-login
  mail_executable = /root/local/encap/dovecot-1.0/libexec/dovecot/imap
}
protocol pop3 {
  login_executable = /root/local/encap/dovecot-1.0/libexec/dovecot/pop3-login
  mail_executable = /root/local/encap/dovecot-1.0/libexec/dovecot/pop3
}
auth_executable = /root/local/encap/dovecot-1.0/libexec/dovecot/dovecot-auth
auth_verbose = yes
auth default {
  mechanisms = plain
  passdb = passwd
  userdb = passwd
  user = root
}