$ doveconf -n
# 2.1.7: /etc/dovecot/dovecot.conf
# OS: Linux 3.2.0-4-amd64 x86_64 Debian 7.0 
auth_username_format = %Ln
first_valid_uid = 1000
last_valid_uid = 10000
listen = 127.0.0.1, 217.169.26.194
mail_access_groups = sharedmail
mail_location = maildir:~/Maildir
mail_plugins = " zlib fts fts_squat acl"
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 ihave
namespace {
  list = children
  location = maildir:/home/%%n/Maildir:INDEX=~/Maildir/shared/%%n
  prefix = shared/%%n/
  separator = /
  subscriptions = no
  type = shared
}
namespace inbox {
  inbox = yes
  location = 
  mailbox Archives {
    special_use = \Archive
  }
  mailbox Drafts {
    special_use = \Drafts
  }
  mailbox Junk {
    special_use = \Junk
  }
  mailbox Sent {
    special_use = \Sent
  }
  mailbox Trash {
    special_use = \Trash
  }
  prefix = 
  separator = /
  type = private
}
passdb {
  driver = pam
}
plugin {
  acl = vfile
  acl_anyone = allow
  acl_shared_dict = file:/var/lib/dovecot/shared-mailboxes
  antispam_backend = pipe
  antispam_pipe_program = /usr/bin/spamc
  antispam_pipe_program_notspam_arg = --reporttype=revoke
  antispam_pipe_program_spam_arg = --reporttype=report
  antispam_pipe_tmpdir = /tmp
  antispam_spam = Junk;Junk E-mail
  antispam_trash = Trash;Deleted Items
  fts = squat
  fts_squat = partial=4 full=10
  recipient_delimiter = -
  sieve = ~/Maildir/dovecot.sieve
  sieve_before = /etc/dovecot/sieve/before.sieve
  sieve_dir = ~/Maildir/sieve
}
protocols = " imap lmtp sieve"
service auth {
  unix_listener auth-client {
    user = Debian-exim
  }
}
service indexer-worker {
  vsz_limit = 512 M
}
ssl_cert = </etc/ssl/certs/mail_server.pem
ssl_cipher_list = HIGH
ssl_key = </etc/ssl/private/mail_privatekey.pem
userdb {
  driver = passwd
}
protocol lmtp {
  mail_plugins = " zlib fts fts_squat acl sieve"
  recipient_delimiter = -
}
protocol imap {
  imap_idle_notify_interval = 5 mins
  mail_plugins = " zlib fts fts_squat acl imap_zlib antispam imap_acl"
}