Data Query Service (DQS) is a set of DNSBLs, updated in real-time and operated by Spamhaus Technology in order to block over 99% of email-borne threats. DQS requires a valid subscription and usage key provided by Spamhaus Technology. To use the DQS service:
1.Activate your free trial of the Data Query Service.
2.Click Enable Spamhaus Data Query Service (DQS).
3.Enter your Spamhaus DQS Key.
4.Click Save.
