[Samba] DLZ Backend DNS Hosed
Matthew Delfino
mdelfino.list.samba at knockinc.com
Thu Jun 20 18:40:44 UTC 2019
And, BTW, right now, I am able to see my problem via the following 3 ways...
1) Through Windows DNS Manager, I cannot add, change or delete any DNS records from:
mycompany.loc
samdom.mycompany.net
mycompany.net
I *can* add, change and delete DNS records from:
_msdcs.samdom.mycompany.net
mycompany.com
7.168.192.in-addr.arpa
5.168.192.in-addr.arpa
3.168.192.in-addr.arpa
2.168.192.in-addr.arpa
11.168.192.in-addr.arpa
2) Running the following command always ends with an error:
# samba_dnsupdate --verbos --all-names
IPs: ['192.168.3.203']
force update: A umbriel.samdom.mycompany.net 192.168.3.203
force update: NS samdom.mycompany.net umbriel.samdom.mycompany.net
force update: NS _msdcs.samdom.mycompany.net umbriel.samdom.mycompany.net
force update: A samdom.mycompany.net 192.168.3.203
force update: SRV _ldap._tcp.samdom.mycompany.net umbriel.samdom.mycompany.net 389
force update: SRV _ldap._tcp.dc._msdcs.samdom.mycompany.net umbriel.samdom.mycompany.net 389
force update: SRV _ldap._tcp.02418c22-7df8-4ea3-aee8-ad1ce0c03cd8.domains._msdcs.samdom.mycompany.net umbriel.samdom.mycompany.net 389
force update: SRV _kerberos._tcp.samdom.mycompany.net umbriel.samdom.mycompany.net 88
force update: SRV _kerberos._udp.samdom.mycompany.net umbriel.samdom.mycompany.net 88
force update: SRV _kerberos._tcp.dc._msdcs.samdom.mycompany.net umbriel.samdom.mycompany.net 88
force update: SRV _kpasswd._tcp.samdom.mycompany.net umbriel.samdom.mycompany.net 464
force update: SRV _kpasswd._udp.samdom.mycompany.net umbriel.samdom.mycompany.net 464
force update: CNAME a51ac937-a293-485a-b851-252be672c41f._msdcs.samdom.mycompany.net umbriel.samdom.mycompany.net
force update: SRV _ldap._tcp.Default-First-Site-Name._sites.samdom.mycompany.net umbriel.samdom.mycompany.net 389
force update: SRV _ldap._tcp.Default-First-Site-Name._sites.dc._msdcs.samdom.mycompany.net umbriel.samdom.mycompany.net 389
force update: SRV _kerberos._tcp.Default-First-Site-Name._sites.samdom.mycompany.net umbriel.samdom.mycompany.net 88
force update: SRV _kerberos._tcp.Default-First-Site-Name._sites.dc._msdcs.samdom.mycompany.net umbriel.samdom.mycompany.net 88
force update: A gc._msdcs.samdom.mycompany.net 192.168.3.203
force update: SRV _gc._tcp.samdom.mycompany.net umbriel.samdom.mycompany.net 3268
force update: SRV _ldap._tcp.gc._msdcs.samdom.mycompany.net umbriel.samdom.mycompany.net 3268
force update: SRV _gc._tcp.Default-First-Site-Name._sites.samdom.mycompany.net umbriel.samdom.mycompany.net 3268
force update: SRV _ldap._tcp.Default-First-Site-Name._sites.gc._msdcs.samdom.mycompany.net umbriel.samdom.mycompany.net 3268
force update: A DomainDnsZones.samdom.mycompany.net 192.168.3.203
force update: SRV _ldap._tcp.DomainDnsZones.samdom.mycompany.net umbriel.samdom.mycompany.net 389
force update: SRV _ldap._tcp.Default-First-Site-Name._sites.DomainDnsZones.samdom.mycompany.net umbriel.samdom.mycompany.net 389
force update: A ForestDnsZones.samdom.mycompany.net 192.168.3.203
force update: SRV _ldap._tcp.ForestDnsZones.samdom.mycompany.net umbriel.samdom.mycompany.net 389
force update: SRV _ldap._tcp.Default-First-Site-Name._sites.ForestDnsZones.samdom.mycompany.net umbriel.samdom.mycompany.net 389
28 DNS updates and 0 DNS deletes needed
Traceback (most recent call last):
File "/usr/sbin/samba_dnsupdate", line 886, in <module>
creds = get_credentials(lp)
File "/usr/sbin/samba_dnsupdate", line 204, in get_credentials
get_krb5_rw_dns_server(creds, sub_vars['DNSDOMAIN'] + '.')
File "/usr/sbin/samba_dnsupdate", line 161, in get_krb5_rw_dns_server
rw_dns_servers = get_possible_rw_dns_server(creds, domain)
File "/usr/sbin/samba_dnsupdate", line 136, in get_possible_rw_dns_server
ans_soa = check_one_dns_name(domain, 'SOA')
File "/usr/sbin/samba_dnsupdate", line 296, in check_one_dns_name
ans = resolver.query(name, name_type)
File "/usr/lib/python3/dist-packages/dns/resolver.py", line 821, in query
raise NoNameservers
dns.resolver.NoNameservers
3) We have a mail server that occasionally rejects passwords from end users. This is the problem end users see that started the whole investigation.
Also, this may be obvious from the output of your script, but in case it's not... we do not have DHCP server running on our DCs, nor do we have any sort of dynamic dhcp setup. It's just Samba and BIND (and kerberos, and ntp...).
Thank you!
Matthew
From: Matthew Delfino via samba <samba at lists.samba.org>
To: L.P.H. van Belle <belle at bazuin.nl>, "samba at lists.samba.org" <samba at lists.samba.org>
Sent: 6/20/2019 1:00 PM
Subject: Re: [Samba] DLZ Backend DNS Hosed
Nice shell script, Louis. Here are the results:
Collected config --- 2019-06-20-12:46 -----------
Hostname: umbriel
DNS Domain: samdom.mycompany.net
FQDN: umbriel.samdom.mycompany.net
ipaddress: 192.168.3.203
-----------
Samba is running as an AD DC
-----------
Checking file: /etc/os-release
NAME="Ubuntu"
VERSION="16.04.6 LTS (Xenial Xerus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 16.04.6 LTS"
VERSION_ID="16.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
VERSION_CODENAME=xenial
UBUNTU_CODENAME=xenial
-----------
This computer is running Ubuntu 16.04.6 LTS x86_64
-----------
running command : ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
2: ens32: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:50:56:a5:50:b3 brd ff:ff:ff:ff:ff:ff
inet 192.168.3.203/24 brd 192.168.3.255 scope global ens32
inet6 fe80::250:56ff:fea5:50b3/64 scope link
-----------
Checking file: /etc/hosts
127.0.0.1 localhost
192.168.3.203 umbriel.samdom.mycompany.net umbriel
# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
-----------
Checking file: /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 192.168.3.201
nameserver 192.168.3.202
search samdom.mycompany.net mycompany.net mycompany.com
-----------
Checking file: /etc/krb5.conf
[logging]
default = FILE:/var/log/krb5libs.log
kdc = FILE:/var/log/krb5kdc.log
admin_server = FILE:/var/log/kadmin.log
[libdefaults]
default_realm = SAMDOM.MYCOMPANY.NET
dns_lookup_realm = false
dns_lookup_kdc = true
ticket_lifetime = 24h
renew_lifetime = 7d
forwardable = true
-----------
Checking file: /etc/nsswitch.conf
# /etc/nsswitch.conf
#
# Example configuration of GNU Name Service Switch functionality.
# If you have the `glibc-doc-reference' and `info' packages installed, try:
# `info libc "Name Service Switch"' for information about this file.
passwd: compat
group: compat
shadow: compat
gshadow: files
hosts: files dns
networks: files
protocols: db files
services: db files
ethers: db files
rpc: db files
netgroup: nis
-----------
Checking file: /etc/samba/smb.conf
# Global parameters
[global]
netbios name = UMBRIEL
realm = SAMDOM.MYCOMPANY.NET
server role = active directory domain controller
#server services = -dns
server services = s3fs, rpc, nbt, wrepl, ldap, cldap, kdc, drepl, winbindd, ntp_signd, kcc, dnsupdate
workgroup = SAMDOM
idmap_ldb:use rfc2307 = yes
#dns forwarder = 8.8.4.4
#dns forwarder = 8.8.8.8
allow dns updates = disabled
dsdb:schema update allowed = true
printcap name = /dev/null
load printers = no
printing = bsd
ldap server require strong auth = no
ldap ssl = start tls
tls enabled = yes
tls keyfile = tls/myKey.pem
tls certfile = tls/umbriel_samdom_mycompany_net.pem
tls cafile = tls/umbriel_samdom_mycompany_net.ca-bundle.pem
#log file = /var/log/samba/%a.%M.log
max log size = 2048
log level = 1 auth_audit:3
apply group policies = yes
mdns name = mdns
[netlogon]
path = /var/lib/samba/sysvol/samdom.mycompany.net/scripts
read only = No
[sysvol]
path = /var/lib/samba/sysvol
read only = No
-----------
Detected bind DLZ enabled..
Checking file: /etc/bind/named.conf
// This is the primary configuration file for the BIND DNS server named.
//
// Please read /usr/share/doc/bind9/README.Debian.gz for information on the
// structure of BIND configuration files in Debian, *BEFORE* you customize
// this configuration file.
//
// If you are just adding zones, please do that in /etc/bind/named.conf.local
include "/etc/bind/named.conf.options";
include "/etc/bind/named.conf.local";
include "/etc/bind/named.conf.default-zones";
include "/var/lib/samba/bind-dns/named.conf";
-----------
Checking file: /etc/bind/named.conf.options
options {
auth-nxdomain yes;
directory "/var/cache/bind";
dnssec-validation auto;
empty-zones-enable no;
managed-keys-directory "/var/cache/bind/";
notify yes; // Not recommended.
tkey-gssapi-keytab "/var/lib/samba/bind-dns/dns.keytab"; // For Dynamic DNS
allow-query {
any;
};
allow-recursion {
any;
};
allow-transfer {
192.168.3.47; // DNS2
192.168.3.48; // DNS1
192.168.5.47; // Opal
192.168.5.48; // Pyrite
192.168.0.8; // DNS3
192.168.0.9; // DNS4
};
also-notify {
192.168.3.47; // DNS2
192.168.3.48; // DNS1
192.168.5.47; // Opal
192.168.5.48; // Pyrite
192.168.0.8; // DNS3
192.168.0.9; // DNS4
};
allow-notify {
192.168.3.47; // DNS2
192.168.3.48; // DNS1
192.168.5.47; // Opal
192.168.5.48; // Pyrite
192.168.0.8; // DNS3
192.168.0.9; // DNS4
};
forwarders {
9.9.9.9;
1.1.1.1;
8.8.8.8;
8.8.4.4;
};
};
-----------
Checking file: /etc/bind/named.conf.local
//
// Do any local configuration here
//
// Consider adding the 1918 zones here, if they are not used in your
// organization
//include "/etc/bind/zones.rfc1918";
-----------
Checking file: /etc/bind/named.conf.default-zones
// prime the server with knowledge of the root servers
zone "." {
type hint;
file "/etc/bind/db.root";
};
// be authoritative for the localhost forward and reverse zones, and for
// broadcast zones as per RFC 1912
zone "localhost" {
type master;
file "/etc/bind/db.local";
};
zone "7.in-addr.arpa" {
type master;
file "/etc/bind/db.127";
};
zone "0.in-addr.arpa" {
type master;
file "/etc/bind/db.0";
};
zone "255.in-addr.arpa" {
type master;
file "/etc/bind/db.255";
};
-----------
Samba DNS zone list: 10 zone(s) found
pszZoneName : mycompany.com
Flags : DNS_RPC_ZONE_DSINTEGRATED DNS_RPC_ZONE_UPDATE_SECURE
ZoneType : DNS_ZONE_TYPE_PRIMARY
Version : 50
dwDpFlags : DNS_DP_AUTOCREATED DNS_DP_DOMAIN_DEFAULT DNS_DP_ENLISTED
pszDpFqdn : DomainDnsZones.samdom.mycompany.net
pszZoneName : 7.168.192.in-addr.arpa
Flags : DNS_RPC_ZONE_DSINTEGRATED DNS_RPC_ZONE_UPDATE_SECURE
ZoneType : DNS_ZONE_TYPE_PRIMARY
Version : 50
dwDpFlags : DNS_DP_AUTOCREATED DNS_DP_DOMAIN_DEFAULT DNS_DP_ENLISTED
pszDpFqdn : DomainDnsZones.samdom.mycompany.net
pszZoneName : 3.168.192.in-addr.arpa
Flags : DNS_RPC_ZONE_DSINTEGRATED DNS_RPC_ZONE_UPDATE_SECURE
ZoneType : DNS_ZONE_TYPE_PRIMARY
Version : 50
dwDpFlags : DNS_DP_AUTOCREATED DNS_DP_DOMAIN_DEFAULT DNS_DP_ENLISTED
pszDpFqdn : DomainDnsZones.samdom.mycompany.net
pszZoneName : 2.168.192.in-addr.arpa
Flags : DNS_RPC_ZONE_DSINTEGRATED DNS_RPC_ZONE_UPDATE_SECURE
ZoneType : DNS_ZONE_TYPE_PRIMARY
Version : 50
dwDpFlags : DNS_DP_AUTOCREATED DNS_DP_DOMAIN_DEFAULT DNS_DP_ENLISTED
pszDpFqdn : DomainDnsZones.samdom.mycompany.net
pszZoneName : 11.168.192.in-addr.arpa
Flags : DNS_RPC_ZONE_DSINTEGRATED DNS_RPC_ZONE_UPDATE_SECURE
ZoneType : DNS_ZONE_TYPE_PRIMARY
Version : 50
dwDpFlags : DNS_DP_AUTOCREATED DNS_DP_DOMAIN_DEFAULT DNS_DP_ENLISTED
pszDpFqdn : DomainDnsZones.samdom.mycompany.net
pszZoneName : mycompany.loc
Flags : DNS_RPC_ZONE_DSINTEGRATED DNS_RPC_ZONE_UPDATE_SECURE
ZoneType : DNS_ZONE_TYPE_PRIMARY
Version : 50
dwDpFlags : DNS_DP_AUTOCREATED DNS_DP_DOMAIN_DEFAULT DNS_DP_ENLISTED
pszDpFqdn : DomainDnsZones.samdom.mycompany.net
pszZoneName : samdom.mycompany.net
Flags : DNS_RPC_ZONE_DSINTEGRATED DNS_RPC_ZONE_UPDATE_SECURE
ZoneType : DNS_ZONE_TYPE_PRIMARY
Version : 50
dwDpFlags : DNS_DP_AUTOCREATED DNS_DP_DOMAIN_DEFAULT DNS_DP_ENLISTED
pszDpFqdn : DomainDnsZones.samdom.mycompany.net
pszZoneName : 5.168.192.in-addr.arpa
Flags : DNS_RPC_ZONE_DSINTEGRATED DNS_RPC_ZONE_UPDATE_SECURE
ZoneType : DNS_ZONE_TYPE_PRIMARY
Version : 50
dwDpFlags : DNS_DP_AUTOCREATED DNS_DP_DOMAIN_DEFAULT DNS_DP_ENLISTED
pszDpFqdn : DomainDnsZones.samdom.mycompany.net
pszZoneName : mycompany.net
Flags : DNS_RPC_ZONE_DSINTEGRATED DNS_RPC_ZONE_UPDATE_SECURE
ZoneType : DNS_ZONE_TYPE_PRIMARY
Version : 50
dwDpFlags : DNS_DP_AUTOCREATED DNS_DP_DOMAIN_DEFAULT DNS_DP_ENLISTED
pszDpFqdn : DomainDnsZones.samdom.mycompany.net
pszZoneName : _msdcs.samdom.mycompany.net
Flags : DNS_RPC_ZONE_DSINTEGRATED DNS_RPC_ZONE_UPDATE_SECURE
ZoneType : DNS_ZONE_TYPE_PRIMARY
Version : 50
dwDpFlags : DNS_DP_AUTOCREATED DNS_DP_FOREST_DEFAULT DNS_DP_ENLISTED
pszDpFqdn : ForestDnsZones.samdom.mycompany.net
Samba DNS zone list Automated check :
zone : mycompany.com ok, no Bind flat-files found
-----------
zone : 7.168.192.in-addr.arpa ok, no Bind flat-files found
-----------
zone : 3.168.192.in-addr.arpa ok, no Bind flat-files found
-----------
zone : 2.168.192.in-addr.arpa ok, no Bind flat-files found
-----------
zone : 11.168.192.in-addr.arpa ok, no Bind flat-files found
-----------
zone : mycompany.loc ok, no Bind flat-files found
-----------
zone : samdom.mycompany.net ok, no Bind flat-files found
-----------
zone : 5.168.192.in-addr.arpa ok, no Bind flat-files found
-----------
zone : mycompany.net ok, no Bind flat-files found
-----------
zone : _msdcs.samdom.mycompany.net ok, no Bind flat-files found
-----------
Installed packages:
ii acl 2.2.52-3 amd64 Access control list utilities
ii attr 1:2.4.47-2 amd64 Utilities for manipulating filesystem extended attributes
hi bind9 1:9.10.3.dfsg.P4-8ubuntu1.12 amd64 Internet Domain Name Server
ii bind9-doc 1:9.10.3.dfsg.P4-8ubuntu1.14 all Documentation for BIND
ii bind9-host 1:9.10.3.dfsg.P4-8ubuntu1.12 amd64 Version of 'host' bundled with BIND 9.X
ii bind9utils 1:9.10.3.dfsg.P4-8ubuntu1.12 amd64 Utilities for BIND
ii krb5-config 2.3 all Configuration files for Kerberos Version 5
ii krb5-locales 1.13.2+dfsg-5ubuntu2.1 all Internationalization support for MIT Kerberos
ii krb5-multidev 1.13.2+dfsg-5ubuntu2.1 amd64 Development files for MIT Kerberos without Heimdal conflict
ii krb5-user 1.13.2+dfsg-5ubuntu2.1 amd64 Basic programs to authenticate using MIT Kerberos
ii libacl1:amd64 2.2.52-3 amd64 Access control list shared library
ii libacl1-dev 2.2.52-3 amd64 Access control list static libraries and headers
ii libattr1:amd64 1:2.4.47-2 amd64 Extended attribute shared library
ii libattr1-dev:amd64 1:2.4.47-2 amd64 Extended attribute static libraries and headers
ii libbind9-140:amd64 1:9.10.3.dfsg.P4-8ubuntu1.12 amd64 BIND9 Shared Library used by BIND
ii libgssapi-krb5-2:amd64 1.13.2+dfsg-5ubuntu2.1 amd64 MIT Kerberos runtime libraries - krb5 GSS-API Mechanism
ii libkrb5-26-heimdal:amd64 1.7~git20150920+dfsg-4ubuntu1.16.04.1 amd64 Heimdal Kerberos - libraries
ii libkrb5-3:amd64 1.13.2+dfsg-5ubuntu2.1 amd64 MIT Kerberos runtime libraries
ii libkrb5-dev 1.13.2+dfsg-5ubuntu2.1 amd64 Headers and development libraries for MIT Kerberos
ii libkrb5support0:amd64 1.13.2+dfsg-5ubuntu2.1 amd64 MIT Kerberos runtime libraries - Support library
-----------
From: L.P.H. van Belle via samba <samba at lists.samba.org>
To: "samba at lists.samba.org" <samba at lists.samba.org>
Sent: 6/19/2019 1:48 AM
Subject: Re: [Samba] DLZ Backend DNS Hosed
Hai,
For bind, please to add this for bind if you use bind_DLZ.
How : systemctl edit bind9, or create the file manualy and run systemctl daemon-reload after.
The edit command already does the reload.
# /etc/systemd/system/bind9.service.d/override.conf
[Service]
ExecReload=
But same for you. ;-) as the other list message today. ([Samba] Reverse DNS)
Can you run this for me on the DC's.
https://raw.githubusercontent.com/thctlo/samba4/master/samba-collect-debug-info.sh
And post the output
It tells me almost all i need to know to help you fix this.
Greetz,
Louis
> -----Oorspronkelijk bericht-----
> Van: samba [mailto:samba-bounces at lists.samba.org] Namens
> Matthew Delfino via samba
> Verzonden: woensdag 19 juni 2019 5:00
> Aan: samba at lists.samba.org
> Onderwerp: [Samba] DLZ Backend DNS Hosed
>
>
> Hello,
>
>
> I'm in trouble here with what appears to be a total meltdown
> of my DNS on my Domain Controllers.
>
>
> I only have two DCs right now and I cannot resolve anything
> on either of them. I am on Ubuntu 16.04 with a compiled
> version of Samba 4.10.4.
>
>
> I also have a compiled version of BIND 9.10.3-P4-Ubuntu <id:ebd72b3>
>
>
> # service bind9 status
> ??? bind9.service - BIND Domain Name Server
> Loaded: loaded (/lib/systemd/system/bind9.service;
> enabled; vendor preset: enabled)
> Drop-In: /run/systemd/generator/bind9.service.d
> ??????50-insserv.conf-$named.conf
> Active: failed (Result: exit-code) since Tue 2019-06-18
> 21:14:39 CDT; 27min ago
> Docs: man:named(8)
> Process: 28347 ExecStop=/usr/sbin/rndc stop (code=exited,
> status=1/FAILURE)
> Process: 28329 ExecStart=/usr/sbin/named -f $OPTIONS
> (code=exited, status=1/FAILURE)
> Main PID: 28329 (code=exited, status=1/FAILURE)
>
>
> Jun 18 21:14:39 cordelia named[28329]: samba_dlz: starting configure
> Jun 18 21:14:39 cordelia named[28329]: zone
> mydomain.com/NONE: has no NS records
> Jun 18 21:14:39 cordelia named[28329]: samba_dlz: Failed to
> configure zone 'mydomain.com'
> Jun 18 21:14:39 cordelia named[28329]: loading configuration: bad zone
> Jun 18 21:14:39 cordelia named[28329]: exiting (due to fatal error)
> Jun 18 21:14:39 cordelia systemd[1]: bind9.service: Main
> process exited, code=exited, status=1/FAILURE
> Jun 18 21:14:39 cordelia rndc[28347]: rndc: connect failed:
> 127.0.0.1#953: connection refused
> Jun 18 21:14:39 cordelia systemd[1]: bind9.service: Control
> process exited, code=exited status=1
> Jun 18 21:14:39 cordelia systemd[1]: bind9.service: Unit
> entered failed state.
> Jun 18 21:14:39 cordelia systemd[1]: bind9.service: Failed
> with result 'exit-code'.
>
>
> It appears that somehow I lost my NS records for one of my
> zones. It seems that I cannot get BIND up long enough to edit
> anything.
>
>
> I've been able to delete my non-essential zones with samba-tool:
>
>
>
> # samba-tool dns zonedelete localhost mydomain.com
> # samba-tool dns zonedelete localhost 7.168.192.in-addr.arpa
> # samba-tool dns zonedelete localhost 3.168.192.in-addr.arpa
> # samba-tool dns zonedelete localhost 2.168.192.in-addr.arpa
> # samba-tool dns zonedelete localhost 11.168.192.in-addr.arpa
> # samba-tool dns zonedelete localhost 5.168.192.in-addr.arpa
>
>
> But now my error is "zone _msdcs.samdom.mydomain.net/NONE:
> has no NS records" and I am real nervous to delete that zone.
>
>
> Does anyone know what I can do to get my samba DC to have NS
> records that my BIND DNS server will understand and therefore load?
>
>
>
> Thanks,
> Matthew
>
> © 2019 KNOCK, inc. All rights reserved. KNOCK is a registered
> trademark of KNOCK, inc. This message and any attachments
> contain information, which is confidential and/or privileged.
> If you are not the intended recipient, please refrain from
> any disclosure, copying, distribution or use of this
> information. Please be aware that such actions are
> prohibited. If you have received this transmission in error,
> kindly notify the sender by e-mail. Your cooperation is appreciated.
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>
>
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© 2019 KNOCK, inc. All rights reserved. KNOCK is a registered trademark of KNOCK, inc. This message and any attachments contain information, which is confidential and/or privileged. If you are not the intended recipient, please refrain from any disclosure, copying, distribution or use of this information. Please be aware that such actions are prohibited. If you have received this transmission in error, kindly notify the sender by e-mail. Your cooperation is appreciated.
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© 2019 KNOCK, inc. All rights reserved. KNOCK is a registered trademark of KNOCK, inc. This message and any attachments contain information, which is confidential and/or privileged. If you are not the intended recipient, please refrain from any disclosure, copying, distribution or use of this information. Please be aware that such actions are prohibited. If you have received this transmission in error, kindly notify the sender by e-mail. Your cooperation is appreciated.
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