Retry transient failures and retain external effects

Context

An access refusal cannot be repaired by repeatedly executing the same request. Infrastructure interruptions can be temporary.

Decision

Known request refusals settle queued file and delivery work promptly, infrastructure errors use the configured retries, and completed external deliveries have no recall compensation.

Alternatives Considered

Retry all failures alike: Unchangeable refusals would delay useful failure feedback.

Recall every delivered link or message on failure: An opened file or delivered message cannot be recovered from its recipient.

Consequences

Failure feedback distinguishes actionable refusals from exhausted infrastructure retries. Five consecutive failed deliveries pause the schedule. Multipart upload cleanup and download refusal do not undo messages already delivered.