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Email Tool
Blacklist Check
Check if a domain or IP is listed on common DNS-based email blacklists.
Primary Use
Blacklist Check
Check domain or IP against common DNS-based blacklists.
Best For
Deliverability operations
Technical diagnostics before and after sender changes.
Operational Context
Run this check before campaigns and after DNS mail-policy edits to catch SPF, DKIM, DMARC, and routing drift early.
Blacklist Check — Start Here
Waiting for input
Enter input and press Check
How to Use
Use Blacklist Check in 4 Steps
01
Enter domain or target
Provide domain, hostname, or required input exactly as configured in your mail setup.
02
Run Blacklist Check
Execute Blacklist Check and collect baseline findings for this specific control.
03
Review risk and status
Interpret returned status against expected policy and operational standards.
04
Cross-check auth stack
Confirm SPF, DKIM, DMARC, MX, and SMTP dependencies where applicable.
What is Blacklist Check?
Blacklist Check is designed to check domain or ip against common dns-based blacklists. It is optimized for day-to-day deliverability and sender-compliance operations.
This makes it suitable for rollout audits, sender hardening, compliance checks, and rapid incident response when mail signals degrade.
Technical Layer
DNS and policy records (SPF, DKIM, DMARC, MX, MTA-STS, BIMI).
Operational Layer
Deliverability status, routing trust, and compliance readiness.
When to Run This Check
- Before campaign launches: verify prerequisites before volume sends.
- After DNS changes: confirm updated policy or record behavior.
- During deliverability drops: isolate technical causes quickly.
- For compliance readiness: validate current posture against modern sender expectations.
Result Interpretation Matrix
| Outcome | Meaning | Action |
|---|---|---|
| Pass / strong | Control is present and coherent | Monitor and keep records versioned |
| Partial / warning | Some controls are present but weak | Tighten policy and retest |
| Fail / missing | Core auth or routing dependency absent | Fix DNS/mail config, then rerun |
Operational Pattern
- Run this check to establish targeted signal.
- Cross-link with SPF, DKIM, DMARC, MX, SMTP as needed.
- Document findings and apply source-side fixes.
- Re-run and share URL-state result for sign-off.
Frequently Asked Questions
What is Blacklist Check used for?
Blacklist Check helps teams check domain or ip against common dns-based blacklists. It supports fast triage and structured email deliverability workflows.
Can this alone guarantee deliverability?
No single check guarantees inbox placement. Use this with SPF, DKIM, DMARC, MX, SMTP, and sender reputation signals for reliable decisions.
Why do different providers show different outcomes?
Mail providers apply different filtering heuristics and reputation models. Use this as technical baseline, then validate with provider-specific telemetry.
Can I share this check with my team?
Yes. Input state is synced into the URL query so you can share exact context across ops, security, and deliverability teams.
Email Scope
ToolBlacklist Check
Statuslive
Shareable URLEnabled
Checklist
• Verify auth records at source DNS
• Confirm mail routing and SMTP path
• Re-run checks after every remediation