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    • https://kb.netapp.com/on-prem/ontap/da/NAS/NAS-KBs/secd.kerberos.preauth_errors_due_to_unreachable_LDAP_servers
      secd.kerberos.preauth: A Kerberos pre-authentication failure occurred for SVM "svm1" due to invalid credentials for SVM1$@DOMAIN.LOCAL. secd.conn.auth.failure: Vserver (svm1) could not authenticate ov...secd.kerberos.preauth: A Kerberos pre-authentication failure occurred for SVM "svm1" due to invalid credentials for SVM1$@DOMAIN.LOCAL. secd.conn.auth.failure: Vserver (svm1) could not authenticate over the network to server (ldap01). Error: Can't contact LDAP server (Service: LDAP (NIS & Name Mapping), Operation: Check LDAP Config). info : TCP connection to ip 10.20.30.122, port 636 failed: Connection refused. { in _connect() at src/connection_manager/secd_connection_shim.cpp:594 }