On Sat, 2010-11-20 at 17:02 +1100, Lox wrote: > dovecot: deliver(virtuser_537): file_dotlock_create(/var/mail/virtuser_537) > failed: Permission denied (euid=537(virtuser_537) egid=518(neaevents) > missing +w perm: /var/mail) (set mail_privileged_group=mail) See http://wiki.dovecot.org/MailLocation/Mbox#Locking And especially see the first NOTE.