[Dovecot] Public Mailbox & ACLs

Tom Clark

4 Jul 2011 4 Jul '11

5:18 p.m.

Hi,

I'm having a problem I can't get my head around. I'm trying to setup a public mailbox that is hidden from all users unless granted access through an ACL.

My folder structure is (migrated from a Courier IMAP/Qmail server):

/var/spool/maildir - main public folder (contains a few .qmail files to redirect mail to the correct subfolder) /var/spool/maildir/Support - support public folder (a public folder rather than a maildir) /var/spool/maildir/Support/.SubFolder1 - support sub folder 1 (a maildir) /var/spool/maildir/Support/.SubFolder2 - support sub folder 2 (another maildir) /var/spool/maildir/System /var/spool/maildir/System/.SubFolder1 /var/spool/maildir/System/.SubFolder2

I couldn't get the namespace working correctly to just have 1 folder called "Shared" (you just got an empty folder when trying to subscribe). I ended up making 2 namespaces below:

namespace { type = public separator = . prefix = Shared.Support. location = maildir:/var/spool/maildir/Support:INDEX=~/Maildir/Support subscriptions = no }

namespace { type = public separator = . prefix = Shared.System. location = maildir:/var/spool/maildir/System:INDEX=~/Maildir/System subscriptions = no }

This allowed me to get the result I was looking for. Using an ACL I get a Shared->Support/System->Subfolders view. However the problem is when a user is not in the ACL they can still see the Shared->Support/System folders (just none of the subfolders) and obviously can't subscribe.

Could someone let me know what I am doing wrong and if there is a better way of doing this?

Many thanks,

Tom

Show replies by date

Tom Clark

6 Jul 6 Jul

11:12 a.m.

Hi,

I've tried doing the following still with no luck.

namespace { type = public separator = . prefix = Shared. location = maildir:/var/spool/maildir:INDEX=~/Maildir/Shared subscriptions = no }

This allows everyone still to see Shared on subscriptions. Does anyone know how to stop this??

Tom

-----Original Message----- From: dovecot-bounces@dovecot.org [mailto:dovecot-bounces@dovecot.org] On Behalf Of Tom Clark Sent: 04 July 2011 3:19 PM To: dovecot@dovecot.org Subject: [Dovecot] Public Mailbox & ACLs

Hi,

I'm having a problem I can't get my head around. I'm trying to setup a public mailbox that is hidden from all users unless granted access through an ACL.

My folder structure is (migrated from a Courier IMAP/Qmail server):

I couldn't get the namespace working correctly to just have 1 folder called "Shared" (you just got an empty folder when trying to subscribe). I ended up making 2 namespaces below:

namespace { type = public separator = . prefix = Shared.Support. location = maildir:/var/spool/maildir/Support:INDEX=~/Maildir/Support subscriptions = no }

namespace { type = public separator = . prefix = Shared.System. location = maildir:/var/spool/maildir/System:INDEX=~/Maildir/System subscriptions = no }

Could someone let me know what I am doing wrong and if there is a better way of doing this?

Many thanks,

Tom

Udo Lembke

12:38 p.m.

Hi Tom, sorry that I can't help you, but i have the same issue ( see thread "[Dovecot] Problems with acl and shared namespace" ). With a slightly different config (separator / and so on) but the same result - the public mailboxes are full accessible also from unauthorized accounts.

I have also no answer to my questions - so i hope one of us get an answer.

BTW. which dovecot version do you use? I use 2.0.13 - perhaps i should try 1.x? But i want to use new software on the new mailserver...

Udo

Am 06.07.2011 10:12, schrieb Tom Clark:

...

Hi,

I've tried doing the following still with no luck.

namespace { type = public separator = . prefix = Shared. location = maildir:/var/spool/maildir:INDEX=~/Maildir/Shared subscriptions = no }

This allows everyone still to see Shared on subscriptions. Does anyone know how to stop this??

Tom ...

Tom Clark

2:49 p.m.

Hi Udo,

I'm using 2.0.8. I've managed to get the ACLs working by adding:

mail_plugins = acl protocol imap { mail_plugins = $mail_plugins imap_acl }

To the bottom of 10-mail.conf in /etc/dovecot/conf.d/ (not sure if this is technically the right place. It may be better adding them to the plugins file).

Then added the dovecot-acl files into the subdirectories.

The only problem I'm having is that I can't get dovecot to NOT display the top level shared folders.

Tom

-----Original Message----- From: dovecot-bounces@dovecot.org [mailto:dovecot-bounces@dovecot.org] On Behalf Of Udo Lembke Sent: 06 July 2011 10:39 AM To: dovecot@dovecot.org Subject: Re: [Dovecot] Public Mailbox & ACLs

I have also no answer to my questions - so i hope one of us get an answer.

BTW. which dovecot version do you use? I use 2.0.13 - perhaps i should try 1.x? But i want to use new software on the new mailserver...

Udo

Am 06.07.2011 10:12, schrieb Tom Clark:

...

Hi,

I've tried doing the following still with no luck.

namespace { type = public separator = . prefix = Shared. location = maildir:/var/spool/maildir:INDEX=~/Maildir/Shared subscriptions = no }

This allows everyone still to see Shared on subscriptions. Does anyone know how to stop this??

Tom ...

Udo Lembke

3:36 p.m.

Hi Tom, are the ACLs working for you as namespace-type shared, or public? The non-reconiced ACLs are on type public at my installation (all user can access all folders).

I had already in 20-imap.conf: protocol imap { mail_plugins = $mail_plugins acl imap_acl ...

and in 10-mail.conf: mail_plugins = acl autocreate quota

OK, acl are doubled, but i hope that's no problem.

Udo

Am 06.07.2011 13:49, schrieb Tom Clark:

...

Hi Udo,

I'm using 2.0.8. I've managed to get the ACLs working by adding:

mail_plugins = acl protocol imap { mail_plugins = $mail_plugins imap_acl }

To the bottom of 10-mail.conf in /etc/dovecot/conf.d/ (not sure if this is technically the right place. It may be better adding them to the plugins file).

Then added the dovecot-acl files into the subdirectories.

The only problem I'm having is that I can't get dovecot to NOT display the top level shared folders.

Tom

Tom Clark

3:38 p.m.

Hi Udo,

My folders are public mailboxes rather than shared. Why don't you copy your namespace and dovecot-acl files here and we'll have a look at them?

Tom

-----Original Message----- From: Udo Lembke [mailto:udo.lembke@albertbauer.com] Sent: 06 July 2011 1:36 PM To: Tom Clark Cc: dovecot@dovecot.org Subject: Re: [Dovecot] Public Mailbox & ACLs

Hi Tom, are the ACLs working for you as namespace-type shared, or public? The non-reconiced ACLs are on type public at my installation (all user can access all folders).

I had already in 20-imap.conf: protocol imap { mail_plugins = $mail_plugins acl imap_acl ...

and in 10-mail.conf: mail_plugins = acl autocreate quota

OK, acl are doubled, but i hope that's no problem.

Udo

Am 06.07.2011 13:49, schrieb Tom Clark:

...

Hi Udo,

I'm using 2.0.8. I've managed to get the ACLs working by adding:

mail_plugins = acl protocol imap { mail_plugins = $mail_plugins imap_acl }

To the bottom of 10-mail.conf in /etc/dovecot/conf.d/ (not sure if this is technically the right place. It may be better adding them to the plugins file).

Then added the dovecot-acl files into the subdirectories.

The only problem I'm having is that I can't get dovecot to NOT display the top level shared folders.

Tom

Udo Lembke

5:04 p.m.

Hi Tom,

Am 06.07.2011 14:38, schrieb Tom Clark:

...

Hi Udo,

My folders are public mailboxes rather than shared. Why don't you copy your namespace and dovecot-acl files here and we'll have a look at them? i like to do so - and during copy/paste i found the issue!!

Jul 06 15:06:41 imap(test4@example.org): Debug: acl vfile: reading file /var/data/public/kunde_2/dovecot-acl ... Jul 06 15:06:41 imap(test4@example.org): Debug: acl vfile: reading file /var/data/archiv/example.org/test4/public/kunde_2/dovecot-acl ... Jul 06 15:06:41 imap(test4@example.org): Debug: acl: No lookup right to mailbox: public/kunde_2

This came throug one link ( /var/data/archiv/example.org/test4/public -> /var/data/public ) I removed the link and now i can't see the public-folders below the users archiv-area. But below the public-namespace the ACLs now working!!

BTW. i think also with links should ACLs working.

Thanks.

Udo

Tom Clark

5:39 p.m.

Hi Udo,

Glad you got it working. I decided to do the list test. This is what I'm getting as a user not allowed access to the shared folders:

02 LIST "" *

LIST (\HasNoChildren) "." "Drafts"
LIST (\HasNoChildren) "." "Trash"
LIST (\HasChildren) "." "INBOX"
LIST (\HasChildren) "." "Shared.System"
LIST (\HasChildren) "." "Shared.Support" 02 OK List completed.

As you can see I can list Shared.System and Shared.Support which is what I don't want!

Tom

-----Original Message----- From: dovecot-bounces@dovecot.org [mailto:dovecot-bounces@dovecot.org] On Behalf Of Udo Lembke Sent: 06 July 2011 3:05 PM To: Tom Clark Cc: dovecot@dovecot.org Subject: Re: [Dovecot] Public Mailbox & ACLs

Hi Tom,

Am 06.07.2011 14:38, schrieb Tom Clark:

...

Hi Udo,

My folders are public mailboxes rather than shared. Why don't you copy your namespace and dovecot-acl files here and we'll have a look at them? i like to do so - and during copy/paste i found the issue!!

BTW. i think also with links should ACLs working.

Thanks.

Udo

Udo Lembke

7:37 p.m.

Hi Tom, any hints in the dovecot-log if you enable verbose logging?

info_log_path = /var/log/dovecot.log auth_verbose = yes auth_debug = yes mail_debug = yes

And how looks your acl-files?

Udo

Am 06.07.2011 16:39, schrieb Tom Clark:

...

Hi Udo,

Glad you got it working. I decided to do the list test. This is what I'm getting as a user not allowed access to the shared folders:

02 LIST "" *

LIST (\HasNoChildren) "." "Drafts"

LIST (\HasNoChildren) "." "Trash"

LIST (\HasChildren) "." "INBOX"

LIST (\HasChildren) "." "Shared.System"

LIST (\HasChildren) "." "Shared.Support" 02 OK List completed.

As you can see I can list Shared.System and Shared.Support which is what I don't want!

Tom

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Tom Clark
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