CONTAP-81008: LDAP SASL bind delay or failure occurs

Issue

Clients may not be able to modify NTFS permissions on files on the CIFS share
ONTAP EMS log reports:
     secd.dns.server.timed.out:error
     secd.ldap.sasl.bind.delayed:error
     secd.ldap.sasl.bind.delayed:error
     secd.ldap.noServers:EMERGENCY

In SecD logs ONTAP attempts to look up the node name in DNS and receives a DNS NXDOMAIN error:
     Failed to connect to XXX.XX.X.XXX for DNS via Source Address XXX.XXX.X.XX: Operation timed out
     Entry for host-name: Cluster01-node1 not found in any of the available sources

During a simple and SASL bind, ONTAP reaches out to the DNS server to resolve the node name which might lead to an LDAP SASL bind delay or failure.
EMS log:
     [node_01: secd: secd.dns.server.timed.out:error]: DNS server 10.10.XX.XX did not respond to vserver = vserver_1 within timeout interval.
     [node_01: secd: secd.ldap.sasl.bind.delayed:error]: LDAP SASL bind taking longer time on server "10.110.10.41" for Vserver "vserver_1".
     [node_01: secd: secd.ldap.sasl.bind.delayed:error]: LDAP SASL bind taking longer time on server "10.110.10.42" for Vserver "vserver_1".
     [node_01: secd: secd.ldap.sasl.bind.delayed:error]: LDAP SASL bind taking longer time on server "10.110.10.43" for Vserver "vserver_1".
     [node_01: secd: secd.ldap.noServers:EMERGENCY]: None of the LDAP servers configured for Vserver (vserver_1) are currently accessible via the network for LDAP service type (Service: LDAP (Active Directory), Operation: ADgetClaimName). * 

SECD logs shows ONTAP doing queries to DNS domain.corp.testdomain.com and failing since there was no DNS record in DNS server:
     ERR  :  LDAP SASL bind taking long time(6 secs)  { in ldapSaslBindGssapi() at src/connection_manager/secd_connection.cpp:653  }
     debug:  Vserver's operational state: running  { in isVserverRunning() at src/configuration_manager/secd_configuration_manager.cpp:2807 }
     debug:  Logged secd.ldap.sasl.bind.delayed to EMS  { in logEmsEventForLdapError() at src/utils/secd_ems_utils.cpp:534 }
     ERR  :  RESULT_ERROR_LDAPSERVER_SASL_BIND_TIMEOUT:7660 in ldapSaslBindGssapi() at src/connection_manager/secd_connection.cpp:661
     ERR  :  RESULT_ERROR_LDAPSERVER_SASL_BIND_TIMEOUT:7660 in ldapSaslBind() at src/connection_manager/secd_connection.cpp:1129
     ERR  :  RESULT_ERROR_LDAPSERVER_SASL_BIND_TIMEOUT:7660 in ldapConnectAD() at src/connection_manager/secd_connection.cpp:1255
     ERR  :  RESULT_ERROR_LDAPSERVER_SASL_BIND_TIMEOUT:7660 in connect() at src/connection_manager/secd_connection.cpp:2517
     info :  Unable to start LDAPS: (null) { in connect() at src/connection_manager/secd_connection.cpp:2647 }
     debug:  LDAP TLS Alert generated is 'warning:close notify'
     info :  Unable to connect to LDAP (Active Directory) service on domain.corp.testdomain.com { in addFailedConnectionJournal() at src/connection_manager/secd_connection_manager.cpp:553 }
     ERR  :  RESULT_ERROR_LDAPSERVER_SASL_BIND_TIMEOUT:7660 in makeConnectionAttempt() at src/connection_manager/secd_connection_manager.cpp:1033 

This problem occurs when a timeout occurs, so it is not a permanent event.