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Diagnostics
Mark Rotteveel | Dotwebster.com edited this page Jul 3, 2026
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Diagnostics help prove configuration and policy before or during real message flow.
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Diagnostics
Use connectivity checks to test whether the Relaywright host can reach the upstream smart host with the selected host, port, TLS mode, timeout, and authentication settings.
Use this after:
- initial upstream setup;
- password or OAuth secret changes;
- firewall or DNS changes;
- upstream provider outages.
The Flow Checker previews whether a trusted device submission would pass:
- source IP or CIDR trust;
- sender policy;
- size policy;
- recipient-domain policy;
- recipient count policy;
- hourly rate-limit policy.
The Flow Checker does not consume device rate-limit quota.
Use Test Email to send a controlled message through the configured upstream path.
Keep test bodies free of secrets and customer data. Diagnostic records are designed not to persist raw SMTP transcripts, secrets, or message bodies.
Use diagnostics together with:
- Queue Operations for message state;
- Logs for operational events;
- Configure Upstream SMTP for relay settings;
- Trusted Networks and Submission Policy for acceptance rules.