Dovecot Master User: Access user's mailbox without owner's password
Hi, I hope you're all right. I describe below the scenario where the problem occurs. I'm trying to activate a master user [1] to be able to access all the boxes of all users by imap. I have configured the dovecot-master-users [2] file with the appropriate permissions. When I try to access, for example with roundcube, through user@mydomain.com*my_master_user@not-exist.com I see in the log, that it seems to ignore the master-user (*) and tries to authenticate the Active Directory but with the master user's password. Then it shows in the log the messages
auth: Info: ldap(user@mydomain.com,127.0.0.1,<6sFGXE6XLwB/AAAB> ) invalid credentials auth: Debug: client passdb out: FAIL 1 user=user@mydomain.com
I have other test cases, but I need to validate the master user login that way.
I would appreciate any comments you can make and I am waiting to answer any questions.
Regards,
[1] https://doc.dovecot.org/configuration_manual/authentication/master_users/ [2] https://docs.iredmail.org/dovecot.master.user.html
root@mail-01:/etc/dovecot# cat /etc/issue Ubuntu 14.04.5 LTS \n \l
root@mail-01:/etc/dovecot# dpkg -l | grep dovecot | awk {'print $2" "$3'} dovecot-core 1:2.2.9-1ubuntu2.6 dovecot-imapd 1:2.2.9-1ubuntu2.6 dovecot-ldap 1:2.2.9-1ubuntu2.6 dovecot-lmtpd 1:2.2.9-1ubuntu2.6 dovecot-managesieved 1:2.2.9-1ubuntu2.6 dovecot-mysql 1:2.2.9-1ubuntu2.6 dovecot-pop3d 1:2.2.9-1ubuntu2.6 dovecot-sieve 1:2.2.9-1ubuntu2.6
root@mail-01:/etc/dovecot# cat dovecot.conf | grep -v '#' | grep -v -e '^$' | sed "s/REALDOMAIN/mydomain/g" listen = * [::] mail_plugins = quota mailbox_alias acl protocols = pop3 imap sieve lmtp mail_uid = 2000 mail_gid = 2000 first_valid_uid = 2000 last_valid_uid = 2000 log_path = /var/log/dovecot.log auth_verbose = yes auth_debug = yes ssl_protocols = !SSLv2 !SSLv3 ssl = required verbose_ssl = no ssl_ca =
root@mail-01:/etc/dovecot# cat dovecot-ldap.conf | sed
"s/realdomain/mydomain/g"
hosts = active-directory:389
ldap_version = 3
auth_bind = yes
dn = domain\vmail
dnpass = Str0ngP4ssw0rd
base = ou=Organizational Unit,dc=domain,dc=com
scope = subtree
deref = never
user_filter =
(&(userPrincipalName=%n@domain.com)(objectClass=person)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))
pass_filter =
(&(userPrincipalName=%n@domain.com)(objectClass=person)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))
#user_filter =
(&(mail=%u)(objectClass=person)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))
#pass_filter =
(&(mail=%u)(objectClass=person)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))
pass_attrs = userPassword=password
default_pass_scheme = CRYPT
user_attrs =
#=mail=master_user,
#mail=user,
=user=%Ln@mydomain.com,
=home=/var/vmail/vmail1/mydomain.com/%Ln/Maildir/,
=mail=maildir:/var/vmail/vmail1/mydomain.com/%Ln/Maildir/,
maxStorage=quota_rule=*:bytes=%$
root@mail-01:/etc/dovecot# ls -al dovecot-master-users -r-x------ 1 dovecot dovecot 120 Nov 13 14:45 dovecot-master-users
Sounds a lot like my problem, which I described some days ago here on the list, but no luck. Please report to the list if you make any progress.
Regards,
Em 14/11/2019 10:41, Dav Rdrz via dovecot escreveu:
Hi, I hope you're all right. I describe below the scenario where the problem occurs. I'm trying to activate a master user [1] to be able to access all the boxes of all users by imap. I have configured the dovecot-master-users [2] file with the appropriate permissions. When I try to access, for example with roundcube, through user@mydomain.com*my_master_user@not-exist.com I see in the log, that it seems to ignore the master-user (*) and tries to authenticate the Active Directory but with the master user's password. Then it shows in the log the messages
auth: Info: ldap(user@mydomain.com,127.0.0.1,<6sFGXE6XLwB/AAAB> ) invalid credentials auth: Debug: client passdb out: FAIL 1 user=user@mydomain.com
I have other test cases, but I need to validate the master user login that way.
I would appreciate any comments you can make and I am waiting to answer any questions.
Regards,
[1] https://doc.dovecot.org/configuration_manual/authentication/master_users/ [2] https://docs.iredmail.org/dovecot.master.user.html
root@mail-01:/etc/dovecot# cat /etc/issue Ubuntu 14.04.5 LTS \n \l
root@mail-01:/etc/dovecot# dpkg -l | grep dovecot | awk {'print $2" "$3'} dovecot-core 1:2.2.9-1ubuntu2.6 dovecot-imapd 1:2.2.9-1ubuntu2.6 dovecot-ldap 1:2.2.9-1ubuntu2.6 dovecot-lmtpd 1:2.2.9-1ubuntu2.6 dovecot-managesieved 1:2.2.9-1ubuntu2.6 dovecot-mysql 1:2.2.9-1ubuntu2.6 dovecot-pop3d 1:2.2.9-1ubuntu2.6 dovecot-sieve 1:2.2.9-1ubuntu2.6
root@mail-01:/etc/dovecot# cat dovecot.conf | grep -v '#' | grep -v -e '^$' | sed "s/REALDOMAIN/mydomain/g" listen = * [::] mail_plugins = quota mailbox_alias acl protocols = pop3 imap sieve lmtp mail_uid = 2000 mail_gid = 2000 first_valid_uid = 2000 last_valid_uid = 2000 log_path = /var/log/dovecot.log auth_verbose = yes auth_debug = yes ssl_protocols = !SSLv2 !SSLv3 ssl = required verbose_ssl = no ssl_ca =
root@mail-01:/etc/dovecot# cat dovecot-ldap.conf | sed "s/realdomain/mydomain/g" hosts = active-directory:389 ldap_version = 3 auth_bind = yes dn = domain\vmail dnpass = Str0ngP4ssw0rd base = ou=Organizational Unit,dc=domain,dc=com scope = subtree deref = never user_filter = (&(userPrincipalName=%n@domain.com)(objectClass=person)(!(userAccountControl:1.2.840.113556.1.4.803:=2))) pass_filter = (&(userPrincipalName=%n@domain.com)(objectClass=person)(!(userAccountControl:1.2.840.113556.1.4.803:=2))) #user_filter = (&(mail=%u)(objectClass=person)(!(userAccountControl:1.2.840.113556.1.4.803:=2))) #pass_filter = (&(mail=%u)(objectClass=person)(!(userAccountControl:1.2.840.113556.1.4.803:=2))) pass_attrs = userPassword=password default_pass_scheme = CRYPT user_attrs =
#=mail=master_user,
#mail=user,
=user=%Ln@mydomain.com,
=home=/var/vmail/vmail1/mydomain.com/%Ln/Maildir/,
=mail=maildir:/var/vmail/vmail1/mydomain.com/%Ln/Maildir/,
maxStorage=quota_rule=*:bytes=%$root@mail-01:/etc/dovecot# ls -al dovecot-master-users -r-x------ 1 dovecot dovecot 120 Nov 13 14:45 dovecot-master-users
*Marcio Merlone* TI - Administrador de redes
*A1 Engenharia - Unidade Corporativa* Fone: +55 41 3616-3797 Cel: +55 41 99689-0036
"Marcio" == Marcio Merlone via dovecot dovecot@dovecot.org writes:
Marcio> Sounds a lot like my problem, which I described some days ago Marcio> here on the list, but no luck. Please report to the list if Marcio> you make any progress.
Marcio, Looking at your passdb { } block, you don't have the "result_sucess = continue" option. Have you tried adding that to make it work?
Marcio> Em 14/11/2019 10:41, Dav Rdrz via dovecot escreveu:
Marcio> Hi, I hope you're all right. I describe below the scenario where the Marcio> problem occurs. Marcio> I'm trying to activate a master user [1] to be able to access all the Marcio> boxes of all users by imap. Marcio> I have configured the dovecot-master-users [2] file with the Marcio> appropriate permissions. Marcio> When I try to access, for example with roundcube, through Marcio> user@mydomain.com*my_master_user@not-exist.com Marcio> I see in the log, that it seems to ignore the master-user (*) and Marcio> tries to authenticate the Active Directory but with the master user's Marcio> password. Then it shows in the log the messages
Marcio> auth: Info: ldap(user@mydomain.com,127.0.0.1,<6sFGXE6XLwB/AAAB> ) Marcio> invalid credentials Marcio> auth: Debug: client passdb out: FAIL 1 user=user@mydomain.com
Marcio> I have other test cases, but I need to validate the master user login that way.
Marcio> I would appreciate any comments you can make and I am waiting to Marcio> answer any questions.
Marcio> Regards,
Marcio> [1] https://doc.dovecot.org/configuration_manual/authentication/master_users/ Marcio> [2] https://docs.iredmail.org/dovecot.master.user.html
Marcio> ---------------------------------------------------------------------------------------
Marcio> root@mail-01:/etc/dovecot# cat /etc/issue Marcio> Ubuntu 14.04.5 LTS \n \l
Marcio> root@mail-01:/etc/dovecot# dpkg -l | grep dovecot | awk {'print $2" "$3'} Marcio> dovecot-core 1:2.2.9-1ubuntu2.6 Marcio> dovecot-imapd 1:2.2.9-1ubuntu2.6 Marcio> dovecot-ldap 1:2.2.9-1ubuntu2.6 Marcio> dovecot-lmtpd 1:2.2.9-1ubuntu2.6 Marcio> dovecot-managesieved 1:2.2.9-1ubuntu2.6 Marcio> dovecot-mysql 1:2.2.9-1ubuntu2.6 Marcio> dovecot-pop3d 1:2.2.9-1ubuntu2.6 Marcio> dovecot-sieve 1:2.2.9-1ubuntu2.6
Marcio> root@mail-01:/etc/dovecot# cat dovecot.conf | grep -v '#' | grep -v -e Marcio> '^$' | sed "s/REALDOMAIN/mydomain/g" Marcio> listen = * [::] Marcio> mail_plugins = quota mailbox_alias acl Marcio> protocols = pop3 imap sieve lmtp Marcio> mail_uid = 2000 Marcio> mail_gid = 2000 Marcio> first_valid_uid = 2000 Marcio> last_valid_uid = 2000 Marcio> log_path = /var/log/dovecot.log Marcio> auth_verbose = yes Marcio> auth_debug = yes Marcio> ssl_protocols = !SSLv2 !SSLv3 Marcio> ssl = required Marcio> verbose_ssl = no Marcio> ssl_ca = ssl_cert = ssl_key = ssl_cipher_list = Marcio> ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:ECDHE-RSA-DES-CBC3-SHA:ECDHE-ECDSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA Marcio> ssl_dh_parameters_length = 2048 Marcio> ssl_prefer_server_ciphers = yes Marcio> disable_plaintext_auth = no Marcio> mail_location = maildir:%Lh/Maildir/:INDEX=%Lh/Maildir/ Marcio> auth_default_realm = mydomain.com Marcio> auth_mechanisms = PLAIN LOGIN Marcio> service auth { Marcio> unix_listener /var/spool/postfix/private/dovecot-auth { Marcio> user = postfix Marcio> group = postfix Marcio> mode = 0666 Marcio> } Marcio> unix_listener auth-master { Marcio> user = vmail Marcio> group = vmail Marcio> mode = 0666 Marcio> } Marcio> unix_listener auth-userdb { Marcio> user = vmail Marcio> group = vmail Marcio> mode = 0660 Marcio> } Marcio> } Marcio> service lmtp { Marcio> user = vmail Marcio> process_min_avail = 5 Marcio> executable = lmtp -L Marcio> unix_listener /var/spool/postfix/private/dovecot-lmtp { Marcio> user = postfix Marcio> group = postfix Marcio> mode = 0600 Marcio> } Marcio> inet_listener lmtp { Marcio> address = 127.0.0.1 Marcio> port = 24 Marcio> } Marcio> } Marcio> auth_master_user_separator = * Marcio> passdb { Marcio> driver = passwd-file Marcio> args = /etc/dovecot/dovecot-master-users Marcio> master = yes Marcio> } Marcio> userdb { Marcio> args = /etc/dovecot/dovecot-ldap.conf Marcio> driver = ldap Marcio> } Marcio> passdb { Marcio> args = /etc/dovecot/dovecot-ldap.conf Marcio> driver = ldap Marcio> } Marcio> plugin { Marcio> auth_socket_path = /var/run/dovecot/auth-master Marcio> quota = dict:user::proxy::quotadict Marcio> quota_rule = *:storage=3G Marcio> quota_warning = storage=100%% quota-warning 100 %u Marcio> quota_warning2 = storage=95%% quota-warning 95 %u Marcio> quota_warning3 = storage=90%% quota-warning 90 %u Marcio> quota_warning4 = storage=85%% quota-warning 85 %u Marcio> quota_grace = 10%% Marcio> acl = vfile Marcio> acl_shared_dict = proxy::acl Marcio> sieve_dir = %Lh/sieve Marcio> sieve = %Lh/sieve/dovecot.sieve Marcio> sieve_global_dir = /var/vmail/sieve Marcio> sieve_before = /var/vmail/sieve/dovecot.sieve Marcio> mailbox_alias_old = Sent Marcio> mailbox_alias_new = Sent Messages Marcio> mailbox_alias_old2 = Sent Marcio> mailbox_alias_new2 = Sent Items Marcio> } Marcio> service quota-warning { Marcio> executable = script /usr/local/bin/dovecot-quota-warning.sh Marcio> unix_listener quota-warning { Marcio> user = vmail Marcio> group = vmail Marcio> mode = 0660 Marcio> } Marcio> } Marcio> service dict { Marcio> unix_listener dict { Marcio> mode = 0660 Marcio> user = vmail Marcio> group = vmail Marcio> } Marcio> } Marcio> dict { Marcio> quotadict = mysql:/etc/dovecot/dovecot-used-quota.conf Marcio> acl = mysql:/etc/dovecot/dovecot-share-folder.conf Marcio> } Marcio> protocol lda { Marcio> mail_plugins = $mail_plugins sieve Marcio> auth_socket_path = /var/run/dovecot/auth-master Marcio> log_path = /var/log/dovecot-sieve.log Marcio> lda_mailbox_autocreate = yes Marcio> lda_mailbox_autosubscribe = yes Marcio> postmaster_address = it@mydomain.com Marcio> } Marcio> protocol lmtp { Marcio> info_log_path = /var/log/dovecot-lmtp.log Marcio> mail_plugins = quota sieve Marcio> postmaster_address = postmaster Marcio> lmtp_save_to_detail_mailbox = yes Marcio> recipient_delimiter = + Marcio> } Marcio> protocol imap { Marcio> mail_plugins = $mail_plugins imap_quota imap_acl Marcio> imap_client_workarounds = tb-extra-mailbox-sep Marcio> mail_max_userip_connections = 30 Marcio> } Marcio> protocol pop3 { Marcio> mail_plugins = $mail_plugins Marcio> pop3_client_workarounds = outlook-no-nuls oe-ns-eoh Marcio> pop3_uidl_format = %08Xu%08Xv Marcio> mail_max_userip_connections = 30 Marcio> } Marcio> service imap-login { Marcio> service_count = 1 Marcio> process_limit = 500 Marcio> } Marcio> service pop3-login { Marcio> service_count = 1 Marcio> } Marcio> service managesieve-login { Marcio> inet_listener sieve { Marcio> address = 127.0.0.1 Marcio> port = 4190 Marcio> } Marcio> } Marcio> namespace { Marcio> type = private Marcio> separator = / Marcio> prefix = Marcio> inbox = yes Marcio> mailbox Sent { Marcio> auto = subscribe Marcio> special_use = \Sent Marcio> } Marcio> mailbox "Sent Messages" { Marcio> auto = no Marcio> special_use = \Sent Marcio> } Marcio> mailbox "Sent Items" { Marcio> auto = no Marcio> special_use = \Sent Marcio> } Marcio> mailbox Drafts { Marcio> auto = subscribe Marcio> special_use = \Drafts Marcio> } Marcio> mailbox Trash { Marcio> auto = subscribe Marcio> special_use = \Trash Marcio> } Marcio> mailbox "Deleted Messages" { Marcio> auto = no Marcio> special_use = \Trash Marcio> } Marcio> mailbox Junk { Marcio> auto = subscribe Marcio> special_use = \Junk Marcio> } Marcio> mailbox Spam { Marcio> auto = no Marcio> special_use = \Junk Marcio> } Marcio> mailbox "Junk E-mail" { Marcio> auto = no Marcio> special_use = \Junk Marcio> } Marcio> mailbox Archive { Marcio> auto = subscribe Marcio> special_use = \Archive Marcio> } Marcio> mailbox Archives { Marcio> auto = no Marcio> special_use = \Archive Marcio> } Marcio> } Marcio> namespace { Marcio> type = shared Marcio> separator = / Marcio> prefix = Shared/%%u/ Marcio> location = maildir:%%Lh/Maildir/:INDEX=%%Lh/Maildir/Shared/%%u Marcio> subscriptions = yes Marcio> list = children Marcio> }
Marcio> root@mail-01:/etc/dovecot# cat dovecot-ldap.conf | sed
Marcio> "s/realdomain/mydomain/g"
Marcio> hosts = active-directory:389
Marcio> ldap_version = 3
Marcio> auth_bind = yes
Marcio> dn = domain\vmail
Marcio> dnpass = Str0ngP4ssw0rd
Marcio> base = ou=Organizational Unit,dc=domain,dc=com
Marcio> scope = subtree
Marcio> deref = never
Marcio> user_filter =
Marcio> (&(userPrincipalName=%n@domain.com)(objectClass=person)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))
Marcio> pass_filter =
Marcio> (&(userPrincipalName=%n@domain.com)(objectClass=person)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))
Marcio> #user_filter =
Marcio> (&(mail=%u)(objectClass=person)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))
Marcio> #pass_filter =
Marcio> (&(mail=%u)(objectClass=person)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))
Marcio> pass_attrs = userPassword=password
Marcio> default_pass_scheme = CRYPT
Marcio> user_attrs =
Marcio> #=mail=master_user,
Marcio> #mail=user,
Marcio> =user=%Ln@mydomain.com,
Marcio> =home=/var/vmail/vmail1/mydomain.com/%Ln/Maildir/,
Marcio> =mail=maildir:/var/vmail/vmail1/mydomain.com/%Ln/Maildir/,
Marcio> maxStorage=quota_rule=*:bytes=%$
Marcio> root@mail-01:/etc/dovecot# ls -al dovecot-master-users Marcio> -r-x------ 1 dovecot dovecot 120 Nov 13 14:45 dovecot-master-users
Marcio> -- Marcio> Marcio Merlone Marcio> TI - Administrador de redes
Marcio> A1 Engenharia - Unidade Corporativa
Marcio> Fone: +55 41 3616-3797
Marcio> Cel: +55 41 99689-0036
Marcio> https://a1.ind.br/
Em 19/11/2019 12:59, John Stoffel via dovecot escreveu:
Marcio, Looking at your passdb { } block, you don't have the "result_sucess = continue" option. Have you tried adding that to make it work?
Sorry for late reply, lone busy admin here....
You spelled wrong, correct is result_success :
https://doc.dovecot.org/configuration_manual/authentication/master_users/
It is there, line 65 of https://pastebin.com/3cAvfNqB and yet no luck.
Thanks for your input.
-- *Marcio Merlone*
participants (3)
-
Dav Rdrz
-
John Stoffel
-
Marcio Merlone