The role DNS & SSL plays
DNS & SSL commonly controls domains, records, certificates, proxies, email authentication, and HTTPS redirects. Its surrounding reliability depends on record ownership, propagation, certificate names, proxy modes, and redirect loops, so the visible error may originate outside the file the AI last changed.
Specific failure patterns to inspect
For Website Emails Not Sending, common causes include provider authentication, DNS records, suppressed recipient, bad From header. Generated implementations also tend to omit defensive error handling, version checks, idempotency, or a safe difference between public configuration and private credentials.
A safer diagnostic sequence
Preserve the current branch and exact error. Then check delivery logs; verify sender domain; test plain text content. Follow one test request across the interface, server or provider, and durable data rather than making several speculative code changes.
Repair boundaries
The repair should change the narrowest contract that is actually broken. Broader refactoring is justified only when duplicated ownership or an unsafe architecture would otherwise let the failure return.
What to avoid
Do not assume a success response means delivery or rotate DNS records blindly. Do not upgrade the entire DNS & SSL stack during a contained incident unless version incompatibility is the proven cause.
What a complete handoff includes
The handoff identifies the root cause, affected code or settings, safe test case, deployment note, and any remaining follow-up. The repaired behavior should be protected by a repeatable check.