[Dovecot] Shared Folders

[Stephen Carville]

I did some more testing and it looks like "public" really means "public" !

For example:

$ id stephen
uid=501(stephen) gid=100(users) groups=100(users),10(wheel),1000(cs)

Normally stephen should have rwx access to the following directory:

$ ls -ald /usr/mail/public/cs
drwxrwx--- 4 cs cs 4096 Mar 11 07:22 /usr/mail/public/cs

But dovecot it insists

Mar 11 09:59:23 scacifs02-lnx dovecot: IMAP(stephen):
opendir(/usr/mail/public/cs) failed: Permission denied

Id I change the permissions:

$ ls -ald /usr/mail/public/cs
drwxrwxr-x 4 cs cs 4096 Mar 11 07:22 /usr/mail/public/cs

it now fails at:

Mar 11 10:07:02 scacifs02-lnx dovecot: IMAP(stephen):
opendir(/usr/mail/public/cs/mail) failed: Permission denied

If I change the permission on that directory

$ ls -lad /usr/mail/public/cs/mail
drwxrwxr-x 3 cs cs 4096 Mar 10 22:07 /usr/mail/public/cs/mail

Mar 11 10:14:12 scacifs02-lnx dovecot: IMAP(stephen):
opendir(/usr/mail/public/cs/mail/.Incoming) failed: Permission denied

one more level

$ ls -lad /usr/mail/public/cs/mail/.Incoming
drwxrwxr-x 5 cs cs 4096 Mar 10 21:01 /usr/mail/public/cs/mail/.Incoming

Mar 11 10:16:45 scacifs02-lnx dovecot: IMAP(stephen):
opendir(/usr/mail/public/cs/mail/.Incoming/new) failed: Permission
denied

and again:

$ ls -lA /usr/mail/public/cs/mail/.Incoming
total 12
drwxrwxr-x 2 cs cs 4096 Mar 10 21:01 cur
-rw-rw---- 1 cs cs    0 Mar 10 21:01 dovecot-shared
drwxrwxr-x 2 cs cs 4096 Mar 10 21:01 new
drwxrwxr-x 2 cs cs 4096 Mar 10 21:01 tmp

Now I try to move a mail into the Incoming folder:

Mar 11 10:20:50 scacifs02-lnx dovecot: IMAP(stephen):
open(/usr/mail/public/cs/mail/.Incoming/tmp/1236792050.M931023P1390.scacifs02-lnx.totalflood.com)
failed: Permission denied

The only two ways I can get public folders to work is to

1.  set the directory perms to 777.

2.  make sure all user have the same primary group and make that
groups for the public folder.

Neither of the above are particularly desirable nor practical.  Is
there another way?