🚫 Email & IP Blacklist Checker
Check if your domain or IP address is listed on 30+ email blacklists (DNSBLs). Being blacklisted can severely impact email deliverability.
What are Email Blacklists?
Email blacklists (also called DNSBLs or RBLs) are databases of IP addresses and domains known to send spam or malicious email. Mail servers use these lists to filter incoming email.
Why Does Being Blacklisted Matter?
- Emails get rejected: Many mail servers will outright reject email from blacklisted senders
- Emails go to spam: Even if delivered, blacklisted senders often end up in spam folders
- Reputation damage: Being blacklisted indicates security issues or spam complaints
Common Reasons for Blacklisting
- Sending spam (intentionally or from a compromised server)
- Open relay or misconfigured mail server
- Malware infection sending spam
- Shared IP with a spammer (common on shared hosting)
- High complaint rates from recipients
- Poor list hygiene (sending to invalid addresses)
How to Get Delisted
- Identify the cause: Check your server logs and security
- Fix the issue: Remove malware, fix configurations, clean your list
- Request removal: Each blacklist has its own delisting process
- Monitor: Keep checking to ensure you don't get relisted