On 2015-10-09 10:33 AM, Nathan Coulson wrote:

I was not able to get a shared mailbox setup working using imapc. Tested using mailboxes on the same server, as well as other servers.

We are using dovecot 2.2.10 from Centos 7, following the guide at http://wiki2.dovecot.org/SharedMailboxes/ClusterSetup

imapc_host=192.168.5.5 #(Local dovecot server) imapc_master_user= %u imapc_password=TempPass #imapc_user=test2@example.com # Added for testing. namespace { type = shared separator = / prefix = shared/%%u/ list = children location = imapc:~/shared/%%u/ } namespace { # used as a control to verify that shared mailboxes work type = shared separator = / prefix = shared2/%%u/ list = children location = sdbox:%%h:INDEXPVT=~/shared2/%%u }

dict { acl = mysql:/etc/dovecot/dovecot-sql_aggelos_shares.conf.ext }

plugin { acl = vfile acl_shared_dict = proxy::acl }

mail_plugins = acl

protocol imap { mail_plugins = acl imap_acl }

passdb { driver = sql args = /etc/dovecot/dovecot-sql.conf.ext }

passdb { # for master user logins driver = sql args = /etc/dovecot/dovecot-sql_aggelos_aclmaster.conf.ext master = yes pass = yes }

userdb { driver = sql args = /etc/dovecot/dovecot-sql.conf.ext }

I can login using test2@example.com*test@example.com (and see all of test2's email), and it looks like it authenticates ok via imap, but shared never shows up. No issues using shared2 which uses direct access to the mailbox

doveadm acl debug -u test@example.com shared/test2@example.com (Fails, uses imapc)

doveadm(test@example.com): Info: Mailbox 'INBOX' is in namespace 'shared/test2@example.com/' doveadm(test@example.com): Info: Mailbox path: /misc/1/2/mail/test@example.com-4/shared/test2@example.com/.INBOX doveadm(test@example.com): Info: All message flags are shared across users in mailbox doveadm(test@example.com): Info: User test@example.com has no rights for mailbox doveadm(test@example.com): Error: User test@example.com is missing 'lookup' right doveadm(test@example.com): Info: Mailbox shared/test2@example.com is NOT visible in LIST

doveadm acl debug -u test@example.com shared/test2@example.com/Junk (Fails, contains a folder that exists) doveadm(test@example.com): Info: Mailbox 'Junk' is in namespace 'shared/test2@example.com/' doveadm(test@example.com): Info: Mailbox path: /misc/1/2/mail/test@example.com-4/shared/test2@example.com/.Junk doveadm(test@example.com): Info: All message flags are shared across users in mailbox doveadm(test@example.com): Info: User test@example.com has no rights for mailbox doveadm(test@example.com): Error: User test@example.com is missing 'lookup' right doveadm(test@example.com): Info: Mailbox shared/test2@example.com/Junk is NOT visible in LIST

doveadm acl debug -u test@example.com shared/test2@example.com/z (Fails, contains a folder that does not exist. Expected result)

doveadm(test@example.com): Error: Mailbox 'z' in namespace 'shared/test2@example.com/' doesn't exist in /misc/1/2/mail/test@example.com-4/shared/test2@example.com/.z

doveadm acl debug -u test@example.com shared2/test2@example.com (Works, using direct storage)

doveadm(test@example.com): Info: Mailbox 'INBOX' is in namespace 'shared2/test2@example.com/' doveadm(test@example.com): Info: Mailbox path: /misc/1/2/mail/test2@example.com-87/mailboxes/INBOX/dbox-Mails doveadm(test@example.com): Info: Per-user private flags in mailbox: \Seen doveadm(test@example.com): Info: User test@example.com has rights: lookup read write-seen doveadm(test@example.com): Info: Mailbox found from dovecot-acl-list doveadm(test@example.com): Info: User test2@example.com found from ACL shared dict doveadm(test@example.com): Info: Mailbox shared2/test2@example.com is visible in LIST

It feels like the acl information in the vfiles is not available when using imapc.

Our setup is as follows: (Currently does not use Dovecot Director, but has the same issues where shared mailboxes may not be local on the server)

• Front servers, that are running dovecot (proxy to backend servers)
• Backend Servers, each handle their own local users.

Thank you

Adding to this, Is it possible to set the location for the VFile's when using imapc? If so, I believe that would allow this to work. (Available over NFS [later GFS2] on remote servers, Technically we could also use the storage directly but I was concerned about 2 dovecot processes on different servers using the same sdbox storage location).

-- Nathan Coulson System Administrator for Bravenet www.bravenet.com nathan@bravenet.com