Having some trouble with my first attempt at virtual mailboxes.  I've enabled the plugin in 10-mail.conf, added a virtual namespace, and created the dovecot-virtual files in the folders.

I see the folder names in the list when I refresh the folders available for subscription - but the folders cannot be subscribed to and I can't view their contents.  What obvious mistake did I make? doveconf -n: auth_cache_size = 4 k auth_mechanisms = plain login default_login_user = nobody default_vsz_limit = 1 G dict { acl = mysql:/usr/local/etc/dovecot/dovecot-dict-sql.conf.ext } disable_plaintext_auth = no listen = * mail_attachment_dir = /var/mail/attachments mail_plugins = fts fts_solr acl zlib virtual mail_shared_explicit_inbox = yes managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mdbox_rotate_interval = 1 days mdbox_rotate_size = 32 M namespace { hidden = no inbox = yes list = yes location = prefix = separator = / subscriptions = yes type = private } namespace { list = children location = mdbox:/var/mail/%%d/%%n/mdbox prefix = shared/%%n/ separator = / subscriptions = no type = shared } namespace { location = virtual:/var/mail/%%d/%%n/mdbox/virtual prefix = virtual/ separator = / } passdb { args = /usr/local/etc/dovecot/dovecot-ldap.conf driver = ldap } plugin { acl = vfile:/usr/local/etc/dovecot/global-acls:cache_secs=300 acl_shared_dict = proxy::acl fts = solr fts_autoindex = yes fts_solr = break-imap-search url=http://solr.amfes.lan:8983/solr/ sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } protocols = imap lmtp sieve service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-userdb { group = mail mode = 0600 user = vmail } } service dict { unix_listener dict { group = mail mode = 0660 user = vmail } } service imap-login { process_limit = 200 process_min_avail = 10 service_count = 1 } service lmtp { process_min_avail = 5 unix_listener /var/spool/postfix/private/dovecot-lmtp { group = mail mode = 0666 user = vmail } } service managesieve-login { inet_listener sieve { port = 4190 } inet_listener sieve_deprecated { port = 2000 } process_min_avail = 0 service_count = 1 } ssl_cert =