diff --git a/lib/Froxlor/Dns/Dns.php b/lib/Froxlor/Dns/Dns.php
index 239397d6..e058c152 100644
--- a/lib/Froxlor/Dns/Dns.php
+++ b/lib/Froxlor/Dns/Dns.php
@@ -594,7 +594,7 @@ class Dns
     {
         $zone_dmarc = [];
         if (Settings::Get('dkim.use_dkim') == '1' && $domain['dkim'] == '1' ){
-            $dmarc_txt = 'v=DMARC1; p=quarantine; ruf=mailto:dmarc@'. $domain['domain'] . '; rua=mailto:dmarc@'. $domain['domain'] . '; fo=1; adkim=r; aspf=r; pct=100; rf=afrf; ri=345600;';
+            $dmarc_txt = 'v=DMARC1; p=reject; ruf=mailto:dmarc@'. $domain['domain'] . '; rua=mailto:dmarc@'. $domain['domain'] . '; fo=1; adkim=r; aspf=r; pct=100; rf=afrf; ri=345600;';
             $zone_dmarc[] = $dmarc_txt;
         }
         return $zone_dmarc;