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# MDaemon Email Server 26.0

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Data Query Service | Scroll Prev Top Next More

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 DQS.

3.Enter your Spamhaus DQS Key.

4.Click Ok.

MDaemon v26.0.1 - April 2026. Copyright © 1996-2026. All rights reserved. MDaemon Technologies