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Verificación Lista Negra Email
Construya búsquedas DNSBL exactas para IP de servidor de correo con comandos dig y nslookup ejecutables, significados de códigos de retorno y enlaces de exclusión.
🔒 Esta herramienta funciona totalmente en tu navegador. Tus archivos nunca se suben a un servidor.
The IP that actually sends your mail, not your website's. Check a bounce message, or your SPF record.
Run these
An answer means listed. NXDOMAIN — "no such name" — means not listed, which is the result you want.
The lists worth checking
| List | What it lists | Codes | Delisting |
|---|
Being on a list is a symptom. Delisting without fixing the cause gets you relisted within days, so the order of work is: find what sent the mail, stop it, then request removal. Common causes are a compromised mailbox, a web form with no rate limit, a misconfigured relay, or a shared IP where somebody else on the same host is the problem.
How Verificación Lista Negra Email works
- Open Verificación Lista Negra Email and review the example state before entering your own values.
- Enter or select the information needed for Verificación Lista Negra Email.
- Review the result and adjust the inputs if you want to compare another case.
Construct the exact DNSBL lookups for a mail server IP, with runnable dig and nslookup commands, return-code meanings and delisting links. The interactive workspace runs in your browser, so you can review the result without creating an account.
FAQ
What is Verificación Lista Negra Email used for?
Construct the exact DNSBL lookups for a mail server IP, with runnable dig and nslookup commands, return-code meanings and delisting links.
Do I need an account?
No. The tool is available directly in the browser without an account or sign-up.
What should I do if the result looks unexpected?
Check the entered values and compare them with the guidance shown in Verificación Lista Negra Email. Use the result as a planning aid and verify important decisions independently.