[Dovecot] imap auto create mailbox: we're not in group 8(mail)

[Steffen Kaiser]

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On Thu, 9 Jan 2014, Adrian Zaugg wrote:

> Somehow I don't understand the intended work flow to have new mailboxes
> auto created. On login of a new user with no mailbox, I get
>
> 2014-01-09 12:53:06 imap(tester): Error: user tester: Initialization
> failed: Namespace '': mkdir(/var/mail/tester) failed: Permission denied
> (euid=1016(tester) egid=1016(tester) missing +w perm: /var/mail, we're
> not in group 8(mail), dir owned by 0:8 mode=0771)

The errors says all.

1) See:
# Group to enable temporarily for privileged operations. Currently this is
# used only with INBOX when either its initial creation or dotlocking 
fails.
# Typically this is set to "mail" to give access to /var/mail.
#mail_privileged_group =

# Grant access to these supplementary groups for mail processes. Typically
# these are used to set up access to shared mailboxes. Note that it may be
# dangerous to set these if users can create symlinks (e.g. if "mail" 
group is
# set here, ln -s /var/mail ~/mail/var could allow a user to delete 
others'
# mailboxes, or ln -s /secret/shared/box ~/mail/mybox would allow reading 
it).
#mail_access_groups =

2) chmod 1777 /var/mail

3) pre-create your user dirs

- -- 
Steffen Kaiser
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