Dear List,

this is my first mail to this list. I'v tried to carefully review all given information towards the Shared Folder subject I could find in the archive / mailing list / wiki. And so far I'm also aware that Timo hasn't put it on the active tasklist for the 1.0 release.

Citing the track http://dovecot.org/pipermail/dovecot/2003-October/002493.html I was wandering, wether any further attempt has been made, to use the given functionality for real work. To be more precise, wether anybody has done

    - delivery of mailboxes to a shared maildir 
    - offering these maildirs through a given namespace

Before bothering here without any local experience, I'v set up a dov-server (1.0alpha3) on a debian sid. As an MTA postfix is doing the job. Within postfix I did set up a virtual domain and the needed maps (mailbox, alias). I'm able to deliver successful with the standard postfix functionality to the given filesystem structure (fs=ext3). If it is on any help, I can post the relevant config files.

As good practice, all mail is delivered to given mailbox-owner with 0600 permission for the new subdir. Hence, can't be seen by any shared-maildir user (unless owner uid matches:)

From here on I'v tried to switch from debians default postfix delivery-strategy (mailbox_command = procmail -a "$EXTENSION") to given dovcot deliver process (mailbox_command = /usr/lib/dovecot/deliver). The primary aim is to define a strategy to deliver with 0660 rights which will enable group read-write access to the given Mailstore.

I have adopted the dovecot.conf enableing a listening socket

...

default_mail_env = maildir:/home/%u/Maildir: \
    	           INDEX=/home/%u/MaildirIndex
    namespace private {
	separator = /
	prefix =
	inbox = yes
}
namespace public {
# the prefix needs to be postponed with the separator
prefix = Public/
# the location path given as [<mailbox-type>:]<path>/mailbox
location = maildir:/home/SharedMaildirs
separator = /
inbox = no
hidden = no
}

    auth default {
    
      ...
    
      # using deliver through a socket
      socket listen {
        master {
          path = /var/run/dovecot/auth-master
          mode = 0666
        }
      }
}
    

and configured the subsequent dovecot-deliver.conf

    ...
    
    auth_socket_path = /var/run/dovecot/auth-master
    mail = maildir:%h/Maildir/
    umask = 0007
    auth_verbose = yes
    use_syslog = yes
    

just to see, whether a manual call

/usr/lib/dovecot/dovecot-deliver -d <user> <testmail

would do the trick. Well, I got the delivered mail, but files are not installed with the etimated previledges.

Can someone can point me to the clou?

Greetings Ralf

PS: I also read about posix-acl's support. But my test's didn't allow a successful read ....