[Dovecot] Chown ChgrpNoPerm problem

[Robert JR]

Hello, 

I just have a one simple question. my logs has the
following entries 

Sep 9 02:48:10 dovecot: pop3(r): Error:
fchown(/home/r/mail/.imap/INBOX/dovecot.index.log.newlock, -1, 12(mail))
failed: Operation not permitted (egid=501(r), group based on
/var/mail/r)
Sep 9 11:22:30 dovecot: pop3(r): Error:
fchown(/home/r/.imap/INBOX/dovecot.index.log.newlock, -1, 12(mail))
failed: Operation not permitted (egid=501(r), group based on
/var/mail/r) 

i know that chmod 0600 /var/mail , will solve the problem
and i will no longer receive the above errors again 

But my question is
that incase i did not set chmod /var/mail 0600, can i ignore such
errors, is these errors harmful ? if this errors keep coming and i
ignored them would this cause mbx corruption .. please advise 

My
dovecot conf is 

disable_plaintext_auth = no
mail_debug =
yes
mail_location = mbox:~/mymail:INBOX=/var/mail/%u
mbox_write_locks =
fcntl
passdb {
 driver = pam
}
ssl_cert =
</etc/pki/dovecot/certs/dovecot.pem
ssl_key =
</etc/pki/dovecot/private/dovecot.pem
userdb {
 driver =
passwd
}
protocol pop3 {
 pop3_uidl_format = %08Xu%08Xv
} 

Thanks.


Robert