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After you configure CA and identity, the SmartSync service is activated, and SmartSync attempts a handshake with the target cluster. If the CA or identity is misconfigured, the handshake process fails. In this case, the /var/log/isi_dm.log contains the following information:
2021-11-30T08:59:06.864181+00:00 <3.7> GEN-HOP-NOCL-RR-1(id1) isi_dm_d[52758]: [0x828c0a110]: /b/mnt/src/isilon/lib/isi_dm/isi_dm_remote/src/acct_mon.cpp:dm_acctmon_try_ping:459: [Fiber 4229] ping for account guid: 0000000000000000c4000000000000000000000000000000, result: dead
Alternatively, the full handshake error is logged if the SmartSync daemon is set to a LOG_INFO level using isi_ilog.