Regarding the given information, it seems to me that the option "mail_shared_explicit_inbox=no" does not work as expected.

Quote from NEWS-2.2: mail_shared_explicit_inbox setting to specify if a shared INBOX should be accessible as "shared/$user" or "shared/$user/INBOX"

Using Dovecot 2.2.13 and Maildir++ Working on the commandline:

# doveconf mail_shared_explicit_inbox mail_shared_explicit_inbox = no

# service dovecot restart

# ls -lda /mail/reader/Shared/owner@example.com/.* Shows no (hidden) folders.

# telnet 127.0.0.1 143 a0 login reader@example.com *** a1 list "" "Shared/owner@example.com"

• LIST (\Noselect \HasChildren) "/" Shared/owner@example.com a1 OK List completed.

Is the retrieved "\Noselect" tag correct with the option "mail_shared_explicit_inbox = no"? I would expect the folder "Shared/owner@example.com" to be "selectable", because I thought the option "mail_shared_explicit_inbox = no" would make e-mails of a shared INBOX visible directly at the folder "Shared/owner@example.com" (which does not work in my case).

Note: Shared *sub*folders of an INBOX work as expected. Just to show that the shared INBOX is accessible (note that it is not shown by a list "" "*" here, which is expected with that option):

a2 list "" "Shared/owner@example.com/INBOX" a2 OK List completed.

a3 select Shared/owner@example.com/INBOX

• FLAGS (\Answered \Flagged \Deleted \Seen \Draft)
• OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)] Flags permitted.
• 27 EXISTS

Using "mail_shared_explicit_inbox = yes" does show the INBOX as a subfolder of "Shared/owner@example.com" and allows accessing the e-mails of the shared INBOX. However, it would be nice (and keep users happy at using their known shared folder layout) to see the e-mails of the shared INBOX at the Shared/owner@example.com folder.

Best Regards, R.Koerner

output of (removed irrelevant things like auth,pop,passdb,userdb,ssl,debug) # dovecot -n # 2.2.13: /etc/dovecot/dovecot.conf mail_location = maildir:~/Maildir mail_log_prefix = "%Us(%u): " mail_plugins = acl listescape namespace { hidden = no ignore_on_failure = no inbox = no list = children location = maildir:%%h/Maildir:INDEX=%h/Shared/%%u:CONTROL=%h/Shared/%%u:INDEXPVT=%h/Shared/%%u prefix = Shared/%%u/ separator = / subscriptions = yes type = shared } namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = INBOX/ separator = / subscriptions = yes type = private }

plugin { acl = vfile acl_shared_dict = file:/var/lib/dovecot/db/shared-mailboxes.db mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename } protocols = imap lmtp protocol imap { mail_plugins = acl listescape imap_acl }