diff --git a/src/App/Text/Explanations.purs b/src/App/Text/Explanations.purs
index f7e879d..4d06ee8 100644
--- a/src/App/Text/Explanations.purs
+++ b/src/App/Text/Explanations.purs
@@ -131,7 +131,8 @@ basics = HH.div_
         ]
       , col
         [ expl' """
-                Spam mitigation 3: Domain-based Message Authentication Reporting and Conformance (DMARC).
+                Spam mitigation 3: mitigate fraud (impersonators) with Domain-based Message Authentication Reporting and Conformance (DMARC).
+                Tell other mail servers to only accept emails from your domain which actually are coming from your domain (SPF) and sent by your mail server (DKIM).
                 """
         , expl_txt """
           Last but not least, DMARC.