Dovecot , ACLs und LDAP - das ewige Wehleiden

# 2.2.9: /etc/dovecot/dovecot.conf
# OS: Linux 3.19.0-25-generic x86_64 Ubuntu 14.04.3 LTS ext4
disable_plaintext_auth = no
hostname = mail.marcelallerkamp.de
mail_gid = vmail
mail_location = maildir:/var/mail/%d/%u/mail
mail_plugins = acl imap_acl
mail_privileged_group = mail
mail_uid = vmail
namespace {
  list = children
  location = maildir:%%h/Maildir
  prefix = shared/%%u/
  separator = /
  subscriptions = no
  type = shared
}
namespace {
  hidden = no
  inbox = no
  list = children
  location = maildir:/var/mail/public
  prefix = Öffentliche Nachrichten/
  separator = /
  subscriptions = no
}
namespace inbox {
  inbox = yes
  location = 
  mailbox Abteilungs-Nachrichten {
    auto = subscribe
  }
  mailbox Archive {
    auto = subscribe
    special_use = \Archive
  }
  mailbox Drafts {
    auto = subscribe
    special_use = \Drafts
  }
  mailbox Junk {
    auto = subscribe
    special_use = \Junk
  }
  mailbox Sent {
    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
  acl_anyone = allow
  acl_shared_dict = file:/etc/dovecot/shared-mailboxes
  quota_rule = *:storage=1G
  quota_rule2 = Trash:storage=+100M
  quota_warning = storage=95%% quota-warning 95 %u
  quota_warning2 = storage=80%% quota-warning 80 %u
  sieve = ~/.dovecot.sieve
  sieve_dir = ~/sieve
}
postmaster_address = postmaster@GRPWARESRV
protocols = " imap lmtp"  
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0660
    user = postfix
  }
  unix_listener auth-userdb {
    group = vmail
    user = vmail
  }
}
service lmtp {
  unix_listener /var/spool/postfix/private/dovecot-lmtp {
    group = postfix
    mode = 0666
    user = postfix
  }
}
ssl = required
ssl_cert = </etc/ssl/own_ssl/cert.crt
ssl_key = </etc/ssl/own_ssl/key.pem
userdb {
  args = /etc/dovecot/dovecot-ldap.conf.ext
  default_fields = uid=vmail gid=vmail home=/var/mail/%d/%u/home
  driver = ldap
}
protocol lmtp {
  mail_plugins = acl imap_acl
}
protocol imap {
  mail_plugins = acl
}