[Dovecot] autocreate plugin fails to subscribe mailbox in public namespace

[Stefan Förster]

Hi,

I'm one step away from replacing a 7 years old qmail/uw-imapd setup
with some state of the art soft- and hardware. We got migration
scripts and test almost done - just one thing that keeps failing:

The autocreate plugin is supposed to subscribe new users to different
mailboxes, one of them being in namespace "Public." - this
subscription to "Public.announcements" fails.

Below is a dovecot -n - and no, there are no error messages in the
logs.


# 1.2.2: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.30-bpo.1-amd64 x86_64 Debian 5.0.2 
log_timestamp: %Y-%m-%d %H:%M:%S 
protocols: imap imaps managesieve
listen(default): *:143
listen(imap): *:143
listen(managesieve): *
ssl_listen(default): *:993
ssl_listen(imap): *:993
ssl_listen(managesieve): 
ssl_cert_file: /etc/ssl/owncerts/snakeoil.crt
ssl_key_file: /etc/ssl/private/snakeoil.key
login_dir: /var/run/dovecot/login
login_executable(default): /usr/lib/dovecot/imap-login
login_executable(imap): /usr/lib/dovecot/imap-login
login_executable(managesieve): /usr/lib/dovecot/managesieve-login
verbose_proctitle: yes
mail_privileged_group: vmail
mail_location: maildir:~/Maildir
mbox_write_locks: fcntl dotlock
mail_executable(default): /usr/lib/dovecot/imap
mail_executable(imap): /usr/lib/dovecot/imap
mail_executable(managesieve): /usr/lib/dovecot/managesieve
mail_process_size: 384
mail_plugins(default): quota imap_quota fts fts_squat acl autocreate expire trash
mail_plugins(imap): quota imap_quota fts fts_squat acl autocreate expire trash
mail_plugins(managesieve): 
mail_plugin_dir(default): /usr/lib/dovecot/modules/imap
mail_plugin_dir(imap): /usr/lib/dovecot/modules/imap
mail_plugin_dir(managesieve): /usr/lib/dovecot/modules/managesieve
namespace:
  type: private
  separator: .
  inbox: yes
  list: yes
  subscriptions: yes
namespace:
  type: public
  separator: .
  prefix: Public.
  location: maildir:/export/vmailboxes/public:INDEX=~/Maildir/public
  list: yes
lda:
  postmaster_address: postmaster at test.cite.lan
  hostname: testvm06.test.cite.lan
  mail_plugins: quota sieve expire trash
  auth_socket_path: /var/run/dovecot/auth-master
auth default:
  mechanisms: plain login cram-md5
  passdb:
    driver: ldap
    args: /etc/dovecot/dovecot-ldap.conf
  userdb:
    driver: ldap
    args: /etc/dovecot/dovecot-ldap.conf
  socket:
    type: listen
    client:
      path: /var/spool/postfix/private/auth
      mode: 432
      user: postfix
      group: sasl
    master:
      path: /var/run/dovecot/auth-master
      mode: 384
      user: vmail
      group: vmail
plugin:
  quota: maildir:User quota
  quota_warning:  storage=90%% /usr/local/bin/quota-warning.sh 90
  quota_warning2: storage=95%% /usr/local/bin/quota-warning.sh 95
  sieve: ~/.dovecot.sieve
  sieve_storage: ~/sieve
  sieve_extensions: +imapflags
  fts: squat
  fts_squat: partial=4 full=10
  acl: vfile
  autocreate: Trash
  autocreate2: Drafts
  autocreate3: Sent
  autocreate4: learn-spam
  autosubscribe: Trash
  autosubscribe2: Drafts
  autosubscribe3: Sent
  autosubscribe4: learn-spam
  autosubscribe5: Public.announcements
  autosubscribe6: INBOX
  expire: Trash 60 Trash/* 60
  expire_dict: proxy::expire
  trash: /etc/dovecot/dovecot-trash.conf
dict:
  expire: pgsql:/etc/dovecot/dovecot-dict-expire.conf

Any hints are really appreciated.


Cheers
Stefan

BTW: If anybody is interested, I could provide load and usage
statistics of our old and new software once step 1 of our migration
(new hardware is step 2) is done. Only ~1000 users, but still...