Dear All,

I'm trying (and failing) to implement a shared mailbox folder. My goal
is to share the inbox of a user 'invoices' to a test user 'rubbish'.
My ACLs appear to be correct: # doveadm acl get -u invoices inbox ID Global Rights user=rubbish create delete expunge insert lookup post
read write write-deleted write-seen

The shared-dict is being generated: # cat /var/lib/dovecot/db/shared-mailboxes shared/shared-boxes/user/rubbish/invoices 1

Yet when I try to list the mailboxes, the shared namespace has no children: . login rubbish password . OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE
IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS
THREAD=ORDEREDSUBJECT MULTIAPPEND URL-PARTIAL CATENATE UNSELECT
CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC
ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS SPECIAL-USE
BINARY MOVE QUOTA ACL RIGHTS=texk] Logged in . list "" "*"

• LIST (\HasNoChildren \Trash) "/" Trash
• LIST (\HasNoChildren \Drafts) "/" Drafts
• LIST (\HasNoChildren \Sent) "/" Sent
• LIST (\Noselect \HasNoChildren) "/" shared
• LIST (\HasNoChildren) "/" INBOX . OK List completed.

I've gone through all the documentation I can find but still can't
sort this out. Any help would be greatly appreciated.

Tim My dovecot config: # 2.2.9: /etc/dovecot/dovecot.conf # OS: Linux 3.13.0-32-generic x86_64 Ubuntu 14.04 LTS xfs auth_mechanisms = plain login auth_username_format = %Ln default_vsz_limit = 384 M disable_plaintext_auth = no listen = * mail_access_groups = mail mail_location =
maildir:/home/email/LHNET/%Lu/Maildir:INBOX=/home/email/LHNET/%Lu/Maildir mail_plugins = acl namespace { list = yes location =
maildir:/home/email/LHNET/%%Lu/Maildir:INDEXPVT=/home/email/LHNET/%Lu/Maildir/shared/%%Lu:CONTROL=/home/email/LHNET/%Lu/Maildir/shared/%%Lu prefix = shared/%%u/ separator = / subscriptions = no type = shared } namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = separator = / type = private } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { acl = vfile:/etc/dovecot/global-acls:cache_secs=300 acl_shared_dict = file:/var/lib/dovecot/db/shared-mailboxes quota = maildir:User quota quota_grace = 10%% quota_rule = *:storage=3G quota_warning = storage=95%% quota-warning 95 %u quota_warning2 = storage=80%% quota-warning 80 %u sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } protocols = " imap" service auth { unix_listener /var/spool/postfix/private/auth { group = mail mode = 0666 user = postfix } unix_listener auth-userdb { group = mail mode = 0640 user = vmail } } service imap-login { inet_listener imap { address = * port = 143 } inet_listener imaps { address = * port = 993 ssl = yes } } service imap { process_limit = 1024 vsz_limit = 384 M } ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } protocol lda { mail_plugins = sieve acl quota postmaster_address = postmaster@lambrookschool.co.uk } protocol imap { mail_plugins = acl acl imap_acl quota imap_quota }