Open SMTP Error Dataset

Open SMTP Error Dataset is an English-language, machine-readable knowledge base for all 92 SMTP enhanced-status outcomes included in the Blazalek.com catalog. Each record contains a canonical enhanced-status code, registry pattern, category, outcome class, retry and suppression guidance, causes, diagnostic steps, owner actions, related codes, and a link to the corresponding English catalog entry. Version 1.0.0 contains 8 success outcomes, 29 temporary-failure outcomes, and 55 permanent-failure outcomes. The dataset is supplied in JSON Lines for nested machine processing, CSV for tabular review, and Parquet for columnar analysis, with a JSON Schema, file hashes, and classifier examples. The deposit also includes an explainable bounce-recognition ruleset with 92 exact enhanced-status-code rules and four text-signal rules. Exact codes return record-level guidance; basic reply-code and text-only matches return cautious context-review actions. Interactive catalog: https://blazalek.com/en/email-errors The dataset is intended for education, support tooling, observability, analytics, delivery operations, and testing SMTP-status parsers. It supports interpretation and diagnosis, but it is not a real-time provider-policy feed and does not replace delivery telemetry or operational judgment.