Spamhaus Blocklist Test
![](https://www.securityzones.net/wp-content/uploads/2022/11/blocklist-test.jpg)
You can use the Blocklist Tester (BLT) to check if your email servers are correctly configured to use the Spamhaus Blocklists.
How does it work? The BLT sends a series of test emails to your nominated email address. If your server is correctly set up to query our blocklists, all the emails should be rejected. The BLT provides a summary of exactly what emails have been rejected or delivered.