diff --git a/src/App/DisplayErrors.purs b/src/App/DisplayErrors.purs
index c016037..72c46a4 100644
--- a/src/App/DisplayErrors.purs
+++ b/src/App/DisplayErrors.purs
@@ -24,8 +24,15 @@ error_to_paragraph v = Bulma.error_message (Bulma.p $ show_error_title v)
       ValidationDNS.VEIPv4     err       -> maybe default_error show_error_ip4 err.error
       ValidationDNS.VEIPv6     err       -> maybe default_error show_error_ip6 err.error
       ValidationDNS.VEName     err       -> maybe default_error show_error_domain err.error
-      ValidationDNS.VETTL min max n      -> Bulma.p $ "TTL should have a value between " <> show min <> " and " <> show max
-                                         <> ", current value: " <> show n <> "."
+      ValidationDNS.VETTL min max n ->
+        Bulma.p $ "TTL should have a value between "
+          <> show min <> " and " <> show max <> ", current value: " <> show n <> "."
+      ValidationDNS.VEDMARCpct min max n ->
+        Bulma.p $ "DMARC sample rate should have a value between "
+          <> show min <> " and " <> show max <> ", current value: " <> show n <> "."
+      ValidationDNS.VEDMARCri  min max n ->
+        Bulma.p $ "DMARC report interval should have a value between "
+          <> show min <> " and " <> show max <> ", current value: " <> show n <> "."
       ValidationDNS.VETXT      err       -> maybe default_error show_error_txt err.error
       ValidationDNS.VECNAME    err       -> maybe default_error show_error_domain err.error
       ValidationDNS.VENS       err       -> maybe default_error show_error_domain err.error
@@ -63,6 +70,8 @@ show_error_title v = case v of
   ValidationDNS.VEIPv6     _     -> "Invalid IPv6 address"
   ValidationDNS.VEName     _     -> "Invalid Name (domain label)"
   ValidationDNS.VETTL _ _ _      -> "Invalid TTL"
+  ValidationDNS.VEDMARCpct _ _ _ -> "Invalid DMARC sample rate"
+  ValidationDNS.VEDMARCri  _ _ _ -> "Invalid DMARC report interval"
   ValidationDNS.VETXT      _     -> "Invalid TXT"
   ValidationDNS.VECNAME    _     -> "Invalid CNAME"
   ValidationDNS.VENS       _     -> "Invalid NS Target"
diff --git a/src/App/Validation/DNS.purs b/src/App/Validation/DNS.purs
index e3692f3..2283306 100644
--- a/src/App/Validation/DNS.purs
+++ b/src/App/Validation/DNS.purs
@@ -20,6 +20,7 @@ import GenericParser.IPAddress as IPAddress
 import GenericParser.RFC5234 as RFC5234
 
 import App.Type.DKIM as DKIM
+import App.Type.DMARC as DMARC
 
 -- | **History:**
 -- | The module once used dedicated types for each type of RR.
@@ -51,6 +52,8 @@ data Error
   | VEProtocol (G.Error ProtocolError)
   | VEPort Int Int Int
   | VEWeight Int Int Int
+  | VEDMARCpct Int Int Int
+  | VEDMARCri  Int Int Int
 
   -- SPF
   | VESPFMechanismName (G.Error DomainParser.DomainError)
@@ -309,6 +312,20 @@ validationDKIM form =
                , name = name, ttl = ttl, target = "" -- `target` is discarded!
                , dkim = Just $ dkim { p = p } }
 
+validationDMARC :: ResourceRecord -> V (Array Error) ResourceRecord
+validationDMARC form =
+  let dmarc = fromMaybe DMARC.emptyDMARCRR form.dmarc
+  in ado
+    name     <- parse DomainParser.sub_eof form.name     VEName
+    ttl      <- is_between min_ttl max_ttl form.ttl      VETTL
+    pct      <- is_between 0 100      (fromMaybe 100   dmarc.pct) VEDMARCpct
+    ri       <- is_between 0 1000000  (fromMaybe 86400 dmarc.ri)  VEDMARCri
+    -- No need to validate the target, actually, it will be completely discarded.
+    -- The different specific entries replace `target` completely.
+    in emptyRR { rrid = form.rrid, readonly = form.readonly, rrtype = "DMARC"
+               , name = name, ttl = ttl, target = "" -- `target` is discarded!
+               , dmarc = Just $ dmarc { pct = Just pct, ri = Just ri } }
+
 validation :: ResourceRecord -> Either (Array Error) ResourceRecord
 validation entry = case entry.rrtype of
   "A"     -> toEither $ validationA     entry
@@ -320,6 +337,7 @@ validation entry = case entry.rrtype of
   "SRV"   -> toEither $ validationSRV   entry
   "SPF"   -> toEither $ validationSPF   entry
   "DKIM"  -> toEither $ validationDKIM  entry
+  "DMARC" -> toEither $ validationDMARC entry
   _       -> toEither $ invalid [UNKNOWN]
 
 id :: forall a. a -> a