limit sharing ability to certain users

Simeon Ott simeon.ott at onnet.ch
Tue Aug 7 12:23:50 EEST 2018 

… attached the dovecot -n, linked files, debug log lines during a standard client login

root at buserver:/etc/dovecot/conf.d# doveconf -n
# 2.2.13: /etc/dovecot/dovecot.conf
# OS: Linux 3.16.0-6-amd64 x86_64 Debian 8.11 
auth_debug = yes
auth_debug_passwords = yes
auth_mechanisms = plain login
auth_verbose = yes
auth_verbose_passwords = plain
debug_log_path = syslog
disable_plaintext_auth = no
info_log_path = syslog
lda_mailbox_autocreate = yes
lda_mailbox_autosubscribe = yes
login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c
mail_debug = yes
mail_gid = 5000
mail_location = maildir:~/Maildir
mail_plugins = zlib quota acl
mail_uid = 5000
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 {
  hidden = no
  ignore_on_failure = no
  inbox = no
  list = children
  location = maildir:%%h/Maildir:INDEX=%h/shared/%%u:CONTROL=%h/shared/%%u
  prefix = shared/%%u/
  separator = /
  subscriptions = yes
  type = shared
}
namespace inbox {
  inbox = yes
  location = 
  mailbox Drafts {
    auto = subscribe
    special_use = \Drafts
  }
  mailbox Sent {
    auto = subscribe
    special_use = \Sent
  }
  mailbox "Sent Messages" {
    special_use = \Sent
  }
  mailbox Spam {
    auto = subscribe
    special_use = \Junk
  }
  mailbox Trash {
    auto = subscribe
    special_use = \Trash
  }
  prefix = 
  separator = /
  type = private
}
passdb {
  args = /etc/dovecot/dovecot-ldap.conf
  driver = ldap
}
plugin {
  acl = vfile
  acl_shared_dict = file:/var/spool/postfix/virtual/shared-mailboxes
  quota = maildir:User quota
  quota_exceeded_message = 4.2.2 Mailbox full
  quota_rule = *:storage=1G
  quota_rule2 = INBOX.Trash:storage=+100M
  quota_rule3 = INBOX.Spam:ignore
  quota_warning = storage=95%% quota-warning 95 %u
  sieve = ~/.dovecot.sieve
  sieve_before = /var/lib/dovecot/sieve/default.sieve
  sieve_dir = ~/sieve
  sieve_max_actions = 32
  sieve_max_redirects = 4
  sieve_max_script_size = 1M
  sieve_quota_max_scripts = 0
  sieve_quota_max_storage = 0
}
protocols = " imap lmtp sieve pop3"
service auth {
  group = dovecot
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0666
    user = postfix
  }
  unix_listener auth-master {
    group = vmail
    mode = 0666
    user = vmail
  }
  unix_listener auth-userdb {
    group = vmail
    mode = 0666
    user = vmail
  }
  user = dovecot
}
service lmtp {
  unix_listener lmtp {
    mode = 0666
  }
}
service managesieve-login {
  inet_listener sieve {
    port = 4190
  }
  inet_listener sieve_deprecated {
    port = 2000
  }
  process_min_avail = 0
  service_count = 1
  vsz_limit = 64 M
}
ssl = no
userdb {
  args = /etc/dovecot/dovecot-ldap.conf
  driver = ldap
}
userdb {
  args = username_format=%Lu /etc/dovecot/share.passwd
  driver = passwd-file
}
protocol lmtp {
  mail_plugins = zlib quota acl sieve
}
protocol lda {
  auth_socket_path = /var/run/dovecot/auth-master
  deliver_log_format = msgid=%m: %$
  mail_plugins = zlib quota acl sieve
  postmaster_address = postmaster at onnet.ch
}
protocol imap {
  mail_plugins = zlib quota acl imap_quota imap_acl
}
protocol sieve {
  info_log_path = /var/log/sieve.log
  log_path = /var/log/sieve.log
  mail_max_userip_connections = 10
  managesieve_implementation_string = Dovecot Pigeonhole
  managesieve_logout_format = bytes=%i/%o
  managesieve_max_compile_errors = 5
  managesieve_max_line_length = 65536
}

root at buserver:/etc/dovecot# cat dovecot-acl
root at buserver:/etc/dovecot#

—> means empty file

root at buserver:/etc/dovecot# cat share.passwd 
test at onnet.ch:::::::userdb_acl=vfile:/etc/dovecot/dovecot-acl userdb_acl_globals_only=yes

root at buserver:/etc/dovecot# sed -e '/^#/d' dovecot-ldap.conf
hosts = localhost
uris = ldap://localhost:389/
debug_level = 10
auth_bind = yes
ldap_version = 3
base = ou=domains,dc=intra,dc=onnet,dc=ch
deref = never
scope = subtree
user_attrs = homeDirectory=home=/var/spool/postfix/virtual/%$,uidNumber=uid,gidNumber=gid,quota=quota_rule=*:bytes=%$
user_filter = (&(objectClass=CourierMailAccount)(mail=%u))
pass_attrs = mail=user,userPassword=password
pass_filter = (&(objectClass=CourierMailAccount)(mail=%u))
iterate_attrs = mail=user
iterate_filter = (objectClass=CourierMailAccount)
default_pass_scheme = CRYPT

root at buserver:/etc/dovecot# cat /var/log/mail.log | grep "Aug  7 11:17:27"
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: acl vfile: file /var/spool/postfix/virtual/onnet.ch/test//Maildir/.test folder 1.sub folder 1 1/dovecot-acl not found
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: acl vfile: reading file /var/spool/postfix/virtual/onnet.ch/test//Maildir/.super/dovecot-acl
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: acl vfile: reading file /var/spool/postfix/virtual/onnet.ch/test//Maildir/.super.hello du/dovecot-acl
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: acl vfile: file /var/spool/postfix/virtual/onnet.ch/test//Maildir/.test folder 1/dovecot-acl not found
Aug  7 11:17:27 buserver dovecot: auth: Debug: auth client connected (pid=3203)
Aug  7 11:17:27 buserver dovecot: auth: Debug: client in: AUTH#0111#011PLAIN#011service=imap#011session=lkbV3NRyyQDAqDgB#011lip=192.168.56.50#011rip=192.168.56.1#011lport=143#011rport=52169#011resp=dGVzdEBvbm5ldC5jaAB0ZXN0QG9ubmV0LmNoAG5vdmVsbDEyMzQ1Ng== (previous base64 data may contain sensitive data)
Aug  7 11:17:27 buserver dovecot: auth: Debug: ldap(test at onnet.ch,192.168.56.1,<lkbV3NRyyQDAqDgB>): bind search: base=ou=domains,dc=intra,dc=onnet,dc=ch filter=(&(objectClass=CourierMailAccount)(mail=test at onnet.ch))
Aug  7 11:17:27 buserver dovecot: auth: Debug: ldap(test at onnet.ch,192.168.56.1,<lkbV3NRyyQDAqDgB>): result: mail=test at onnet.ch; mail unused
Aug  7 11:17:27 buserver dovecot: auth: Debug: ldap(test at onnet.ch,192.168.56.1,<lkbV3NRyyQDAqDgB>): result: mail=test at onnet.ch
Aug  7 11:17:27 buserver dovecot: auth: Debug: client passdb out: OK#0111#011user=test at onnet.ch
Aug  7 11:17:27 buserver dovecot: auth: Debug: master in: REQUEST#0113718250497#0113203#0111#011089fd1d9e1a2c66586786422f24c51cd#011session_pid=3206#011request_auth_token
Aug  7 11:17:27 buserver dovecot: auth: Debug: ldap(test at onnet.ch,192.168.56.1,<lkbV3NRyyQDAqDgB>): user search: base=ou=domains,dc=intra,dc=onnet,dc=ch scope=subtree filter=(&(objectClass=CourierMailAccount)(mail=test at onnet.ch)) fields=homeDirectory,uidNumber,gidNumber,quota
Aug  7 11:17:27 buserver dovecot: auth: Debug: ldap(test at onnet.ch,192.168.56.1,<lkbV3NRyyQDAqDgB>): result: uidNumber=5000 quota=1073741824 gidNumber=5000 homeDirectory=onnet.ch/test/; homeDirectory,uidNumber,quota,gidNumber unused
Aug  7 11:17:27 buserver dovecot: auth: Debug: ldap(test at onnet.ch,192.168.56.1,<lkbV3NRyyQDAqDgB>): result: uidNumber=5000 quota=1073741824 gidNumber=5000 homeDirectory=onnet.ch/test/
Aug  7 11:17:27 buserver dovecot: auth: Debug: master userdb out: USER#0113718250497#011test at onnet.ch#011home=/var/spool/postfix/virtual/onnet.ch/test/#011uid=5000#011gid=5000#011quota_rule=*:bytes=1073741824#011auth_token=913bee7c974e18d4527fc38d90457411e7e61201
Aug  7 11:17:27 buserver dovecot: imap-login: Login: user=<test at onnet.ch>, method=PLAIN, rip=192.168.56.1, lip=192.168.56.50, mpid=3206
Aug  7 11:17:27 buserver dovecot: imap: Debug: Loading modules from directory: /usr/lib/dovecot/modules
Aug  7 11:17:27 buserver dovecot: imap: Debug: Module loaded: /usr/lib/dovecot/modules/lib01_acl_plugin.so
Aug  7 11:17:27 buserver dovecot: imap: Debug: Module loaded: /usr/lib/dovecot/modules/lib02_imap_acl_plugin.so
Aug  7 11:17:27 buserver dovecot: imap: Debug: Module loaded: /usr/lib/dovecot/modules/lib10_quota_plugin.so
Aug  7 11:17:27 buserver dovecot: imap: Debug: Module loaded: /usr/lib/dovecot/modules/lib11_imap_quota_plugin.so
Aug  7 11:17:27 buserver dovecot: imap: Debug: Module loaded: /usr/lib/dovecot/modules/lib20_zlib_plugin.so
Aug  7 11:17:27 buserver dovecot: imap: Debug: Added userdb setting: plugin/quota_rule=*:bytes=1073741824
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: Effective uid=5000, gid=5000, home=/var/spool/postfix/virtual/onnet.ch/test/
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: Quota root: name=User quota backend=maildir args=
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: Quota rule: root=User quota mailbox=* bytes=1073741824 messages=0
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: Quota rule: root=User quota mailbox=INBOX.Trash bytes=+104857600 messages=0
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: Quota rule: root=User quota mailbox=INBOX.Spam ignored
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: Quota warning: bytes=1020054732 (95%) messages=0 reverse=no command=quota-warning 95 test at onnet.ch
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: Quota grace: root=User quota bytes=107374182 (10%)
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: Namespace inbox: type=private, prefix=, sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:~/Maildir
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: maildir++: root=/var/spool/postfix/virtual/onnet.ch/test//Maildir, index=, indexpvt=, control=, inbox=/var/spool/postfix/virtual/onnet.ch/test//Maildir, alt=
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: acl: initializing backend with data: vfile
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: acl: acl username = test at onnet.ch
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: acl: owner = 1
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: acl vfile: Global ACLs disabled
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: Namespace : type=shared, prefix=shared/%u/, sep=/, inbox=no, hidden=no, list=children, subscriptions=yes location=maildir:%h/Maildir:INDEX=/var/spool/postfix/virtual/onnet.ch/test//shared/%u:CONTROL=/var/spool/postfix/virtual/onnet.ch/test//shared/%u
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: shared: root=/var/run/dovecot, index=, indexpvt=, control=, inbox=, alt=
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: acl: initializing backend with data: vfile
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: acl: acl username = test at onnet.ch
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: acl: owner = 0
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Debug: acl vfile: Global ACLs disabled
Aug  7 11:17:27 buserver dovecot: imap(test at onnet.ch): Disconnected: Logged out in=30 out=457

thanks for looking into this

> On 7 Aug 2018, at 10:34, Aki Tuomi <aki.tuomi at dovecot.fi> wrote:
> 
> Can you provide your doveconf -n after adding the database *after* LDAP.
> 
> You probably need to add 'noauthenticate' as one parameter after the
> userdb ones.
> 
> Aki
> 

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