Email Blacklist Checker
Check in real-time whether your server IP or domain is listed on international spam lists. Ensure smooth email delivery.
What is an Email Blacklist?
A blacklist (or RBL / DNSBL) is a real-time database that lists IP addresses or domains known for sending spam. Large email providers like Gmail, Outlook, or Swiss providers use these lists to filter incoming messages. If your IP is on such a list, your emails will either be rejected or end up directly in the spam folder.
Why does an IP end up on a blacklist?
- Infected computers: A device in your network is sending spam emails unnoticed (malware).
- Incorrect configuration: Missing SPF, DKIM, or DMARC records make your emails look suspicious.
- Marketing errors: You send newsletters to recipients who have not consented to receive them.
- Shared Hosting: Another user on the same server is behaving abusively.
Conclusion
Monitoring your own mail reputation is business-critical. If you are listed, quick action is required: find the cause, fix it, and request a "delisting." With a strong partner like CURIAWEB, we proactively ensure your mail infrastructure stays clean.
Problems sending emails?
We analyze your mail reputation and optimize your SPF & DKIM settings for maximum delivery rates.
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