Domain Mail Security Checker

Version Changelog

• v0.1.0 — Initial script structure and basic DNS lookups (A, MX, TXT).
• v0.1.1 — Added initial SPF record and DMARC text matching.
• v0.1.2 — Implemented server-side cURL TLS inspection for web hosts.
• v0.1.3 — Expanded socket connectivity checks to secure mail ports 465 and 587.
• v0.2.0 — Added asynchronous live AJAX execution stream.
• v0.2.1 — Implemented single-report plaintext export (clipboard and .txt).
• v0.2.2 — Added batch mode textarea for multi-domain input processing.
• v0.3.0 — Overhauled DMARC telemetry reporting (rua/ruf analysis and tool links).
• v0.3.1 — Tightened CSS layout, padding, and table cell dimensions for a compact UI.
• v0.3.2 — Added CSS variable-driven Dark/Light mode theme toggle with local storage persistence.
• v0.4.0 — Added master batch export controls ("Copy All" and "Save All TXT").
• v0.4.1 — Replaced double section separator lines with clean blank lines in batch exports.
• v0.5.0 — Implemented resilient multi-tiered DNS lookups to handle restricted resolver queries.
• v0.5.1 — Integrated URL parsing and root apex domain normalization (getRootApexDomain).
• v0.6.0 — Added transparent live progress ticker logging for domain apex normalization.
• v0.6.5 — Added footer changelog modal/view toggle and disclaimer notice.
• v0.6.8 — Added strict IP-based rate limiting (3 single queries / 3 mins; 10 batch queries / 10 mins).
• v0.6.9 — Restricted usage terms to non-commercial, personal use only.
• v0.7.0 — Integrated StopForumSpam API screening and North American geographic access policy (US, CA, MX).
• v0.7.1 — Added URL testing parameters (?simulate_geo=XX, ?simulate_sfs=1, and ?simulate_ratelimit=1) with interactive help index on bare query (? syntax).
• v0.8.0 — Migrated to sequential step-by-step AJAX architecture to bypass IIS/FastCGI buffering, allowing real-time ticker updates.
• v0.8.1 — Integrated cross-reference link to the standalone SPF Flattener utility for high-hop-count warnings.