IP & Domain Blacklist Checker
Instantly check your mail server's IP or domain against the most common email blacklists.
Enter an IP address or domain to check its blacklist status.
Understanding Email Blacklists
Email blacklists, also known as DNS Blacklists (DNSBLs), are real-time databases used by mail servers to identify IP addresses and domains known for sending spam. If your mail server's IP address or your domain appears on one of these lists, your emails are highly likely to be rejected or sent straight to the recipient's spam folder, crippling your communication channels.
Regularly checking your status is crucial for maintaining a positive sender reputation and ensuring high email deliverability. This tool helps you quickly identify reputation issues so you can take steps to get delisted and protect your ability to reach customers, partners, and employees.
Frequently Asked Questions
What is an IP blacklist?
An IP blacklist, or DNSBL (DNS Blacklist), is a real-time list of IP addresses that have been identified as sources of spam or malicious activity. Email providers use these lists to filter and block incoming emails, so being on a blacklist can severely harm your email deliverability.
How do I get my domain or IP address off a blacklist?
To get delisted, you must first identify the cause of the blacklisting (e.g., a compromised account sending spam, poor sending practices). After resolving the underlying issue, you can visit the website of the specific blacklist that has listed you and follow their removal request process. Our "Talk to an Expert" service can guide you through this.
Does a blacklist check affect my DMARC policy?
A blacklist check is separate from your DMARC policy but related to overall email health. While DMARC protects your domain from being spoofed, being on a blacklist impacts the deliverability of your legitimate emails. A comprehensive email security strategy involves both strong DMARC enforcement and maintaining a clean sender reputation by staying off blacklists.