[Dovecot] Configuration problem?

[Anne Wilson]

I have a new Scientific Linux 6.1 mail server (dovecot -n below) and
am seeing the following in the logs, with no idea what is happening:

 --------------------- Dovecot Begin ------------------------


 Dovecot was killed, and not restarted afterwards.


 **Unmatched Entries**
    dovecot: imap(anne): Connection closed bytes=205614/894243: 1 Time(s)
    dovecot: imap(anne): Disconnected: Logged out bytes=24296/89310: 1 Time(s)
    dovecot: imap(anne): Disconnected: Logged out bytes=24526/76772: 1 Time(s)
    dovecot: imap(anne): Disconnected: Logged out bytes=26254/75778: 1 Time(s)
    dovecot: imap(anne): Disconnected: Logged out bytes=27948/134120: 1 Time(s)
    dovecot: imap(anne): Disconnected: Logged out bytes=29304/116087: 1 Time(s)
    dovecot: imap(anne): Disconnected: Logged out bytes=34802/914087: 1 Time(s)
    dovecot: imap(anne): Disconnected: Logged out bytes=4457/11719: 1 Time(s)
    dovecot: imap(anne): Disconnected: Logged out bytes=5322/184434: 1 Time(s)
    dovecot: imap(anne): Disconnected: Logged out bytes=61388/106618: 1 Time(s)
    dovecot: imap(anne): Disconnected: Logged out bytes=6164/21347: 1 Time(s)
    dovecot: imap(anne): Disconnected: Logged out bytes=7914/89868: 1 Time(s)
    dovecot: imap: Server shutting down. bytes=1309821/4473013: 1 Time(s)
    dovecot: imap: Server shutting down. bytes=14215/97371: 1 Time(s)
    dovecot: imap: Server shutting down. bytes=1459/9382: 1 Time(s)
    dovecot: imap: Server shutting down. bytes=1688/26161: 1 Time(s)
    dovecot: imap: Server shutting down. bytes=1705/5038: 1 Time(s)
    dovecot: imap: Server shutting down. bytes=3146/79269: 1 Time(s)
    dovecot: master: Dovecot v2.0.9 starting up (core dumps disabled): 1 Time(s)

 ---------------------- Dovecot End -------------------------

 dovecot -n
# 2.0.9: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-131.0.15.el6.x86_64 x86_64 Scientific Linux release
6.1 (Carbon)
mail_location = maildir:~/Maildir/
mbox_write_locks = fcntl
passdb {
  driver = pam
}
protocols = imap
ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
ssl_key = </etc/pki/dovecot/private/dovecot.pem
userdb {
  driver = passwd
}

/etc/dovecot/dovecot.conf: - everything being defaults, as far as I
can see, apart from these lines:

# Protocols we want to be serving.
protocols = imap
listen = *, ::
mail_location = maildir:~/Maildir/
maildir_copy_with_hardlinks = yes

Is it really expecting an mbox file?

I'm completely bogged down with this - my previous setup was fine, but
the old config file doesn't work with this system.  Any help and/or
pointers would be greatly appreciated.

Anne