On Wed, 2009-08-19 at 13:18 +0100, Arthur Dent wrote:
dovecot: Dovecot v1.2.0 starting up (core dumps disabled): 1 Time(s) dovecot: IMAP(mark): fchown() failed with file /home/mark/Mail/.imap/INBOX/dovecot.index.log.newlock: Operation not permitted: 1 Time(s)
v1.2.3+ would have given a bit better error message here. Anyway the issue is that nowadays Dovecot tries to preserve mailbox's permissions so that shared mailboxes work properly. What permissions do you have in the actual INBOX file?
My guess is that you have 0660 permissions of /var/mail/$USER so Dovecot tries to preserve the group. Easiest fix that also makes your system more secure is to chmod 0600 it.
As I access my mailbox several times a day (and certainly did yesterday) from several different mail clients I am surprised that the error count is only 1 for most the above entries. Is this being caused by some sort of cron job (logrotate perhaps)?
It happens only when index files are being created/rotated, which happens automatically "every once in a while".