Domain Blacklist Check Basics

This article covers the setup of the Domain Blacklist check in The Domain Blacklist Check checks your domain against approximately 100 of the most well-known spam blacklists once per day to see if it’s included on those lists.

This tutorial assumes you’ve created and logged into your account.

Table of Contents

Adding Your First Domain Blacklist Check


To add a new Domain Blacklist Check, click Monitoring > Checks from the navigation menu on the left side of your screen. Next, click the blue Add New button. The Add Check pop-up box will appear.

  • Enter a name for your Check. 
  • Choose Domain Blacklist from the Check type dropdown box.
  • Enter the address of the domain to check.


Has Your Domain Been Blacklisted?

The Domain Blacklist check will scan about 100 blacklists once per day to see if your domain has been flagged. Domains are flagged as spam websites for sending spam emails or when the site is sending too many emails and has been reported by email recipients repeatedly.

Failed Checks

Return sends an alert to your listed contact email if your domain is on one of the spam blacklists it checks against. The alert includes the spam blacklists on which your domain is found.

If you receive an alert, contact each spam blacklist owner individually and follow their procedures to request removal of your domain. Blacklist checks do not have an Average Response Time, but do report the Total Downtime.

Finalizing Your Check


Before you finalize your check, click Run Test to verify your settings are returning the expected results. 


Please note: This check type is run once per day. If you experience a failure, and believe the issue is corrected, you can click Run Test to verify settings are correct. The check will return to UP status 24 hours after the alert was issued, assuming the test is successful and no other issues are detected.

Required fields in the Domain Blacklist check include:

  • Name of check
  • Check Type
  • Domain

Other Commands


In addition to the check itself, you can schedule routine maintenance downtime, or control how long it takes to escalate downtime events.

Please take a moment to familiarize yourself with the  Uptime Checks Field Explanation Support Article. We’ve also included a notes section in this Check for any additional information you’d like to save for future reference.

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