Spamhaus Blocklist Tester

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Spamhaus Blocklist Test

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.