An egress destination is failing

When a destination can't deliver, you'll see egress/failed events and a lastError on the destination.

  1. Reachability — Synacl must reach your endpoint/host (open the firewall/allowlist).
  2. Credentials — re-check the token (InfluxDB), DB user/password (MariaDB), or SASL creds (Kafka).
  3. Target exists — bucket/table/topic must exist and be writable.
  4. Use Test — the Test button on the destination surfaces the exact error.
  5. Filter — if nothing arrives but there's no error, confirm the device+tag filter matches streams you actually produce.

Per-type details: webhook · InfluxDB · MariaDB · Kafka.

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