diff --git a/dns/dmarc-detect.yaml b/dns/dmarc-detect.yaml
index cdb70ed656..df3d73d376 100644
--- a/dns/dmarc-detect.yaml
+++ b/dns/dmarc-detect.yaml
@@ -24,12 +24,12 @@ dns:
       - type: regex
         part: answer
         regex:
-          - "IN\tTXT\\t(.+)$"
+          - "IN\tTXT\\t(.+DMARC.+)$"
 
     extractors:
       - type: regex
         group: 1
         regex:
-          - "IN\tTXT\t(.+)"
+          - "IN\tTXT\t(.+DMARC.+)"
 
 # digest: 4a0a0047304502204076c7a56a64102033ddcbffe604e0099b21d4e3fc93681f25db84b6c9ea0d49022100cc84a29967d71f3d07b107990f34ec5d804757336391661727adf79dc07eef3d:922c64590222798bb761d5b6d8e72950