plain-prompt
Diagnose Dovecot authentication failures
Separate user lookup, password verification, TLS, and protocol-layer failures.
- Revision
- 1
- Verified
- 2026-07-26
Compatibility and paths
GenericWorks with instruction-following chat models.
ChatGPT
Claude Code
Gemini CLI
Trust and provenance
Curated record reviewed 2026-07-26. Results still depend on the supplied context and target environment.
Fill variables
Values stay in this browser tab and are not stored.
Generated asset2 required field(s) must be completed
Objective: Identify the authentication stage and protect credentials during testing.
Context: Never request real passwords in diagnostic output.
Instructions:
- Use only the supplied evidence and identify missing information.
- Lead with the finding, confidence, and one safe next action.
- Put read-only checks before mutations and include a stop condition.
- Never request or reproduce secrets, credentials, or private keys.
User request:
Dovecot version/backend:
{{environment}}
Redacted logs and test output:
{{evidence}}
Diagnose authentication.
Required output:
- Finding
- Evidence
- Confidence
- Safe next check
- Stop conditionReal example
Input
auth-worker: passwd-file(user@example.net): unknown user
Expected result
The user database lookup failed before password verification. Confirm the configured userdb source, normalized username, and domain mapping with redacted test data.