git » spf » commit c4a8b79

diff --git a/spf.go b/spf.go
index 3adbd5e..f664213 100644
--- a/spf.go
+++ b/spf.go
@@ -308,6 +308,12 @@ func (r *resolution) Check(domain string) (Result, error) {
 	r.trace("check %q %d %d", domain, r.count, r.voidcount)
 	txt, err := r.getDNSRecord(domain)
 	if err != nil {
+		if isNotFound(err) {
+			// NXDOMAIN -> None.
+			// https://datatracker.ietf.org/doc/html/rfc7208#section-4.3
+			r.trace("dns domain not found: %v", err)
+			return None, ErrNoResult
+		}
 		if isTemporary(err) {
 			r.trace("dns temp error: %v", err)
 			return TempError, err
@@ -316,10 +322,10 @@ func (r *resolution) Check(domain string) (Result, error) {
 			r.trace("multiple dns records")
 			return PermError, err
 		}
-		// Could not resolve the name, it may be missing the record.
-		// https://tools.ietf.org/html/rfc7208#section-2.6.1
+		// Got another, permanent error.
+		// https://datatracker.ietf.org/doc/html/rfc7208#section-2.6.7
 		r.trace("dns perm error: %v", err)
-		return None, err
+		return PermError, err
 	}
 	r.trace("dns record %q", txt)
 
diff --git a/spf_test.go b/spf_test.go
index bae1098..d1c8ae4 100644
--- a/spf_test.go
+++ b/spf_test.go
@@ -2,7 +2,6 @@ package spf
 
 import (
 	"context"
-	"fmt"
 	"net"
 	"testing"
 
@@ -249,7 +248,10 @@ func TestNoRecord(t *testing.T) {
 	dns := NewDefaultResolver()
 	dns.Txt["d1"] = []string{""}
 	dns.Txt["d2"] = []string{"loco", "v=spf2"}
-	dns.Errors["nospf"] = fmt.Errorf("no such domain")
+	dns.Errors["nospf"] = &net.DNSError{
+		Err:        "record not found for testing",
+		IsNotFound: true,
+	}
 	defaultTrace = t.Logf
 
 	for _, domain := range []string{"d1", "d2", "d3", "nospf"} {
@@ -582,8 +584,8 @@ func TestWithContext(t *testing.T) {
 	cancelF()
 	res, err = CheckHostWithSender(ip1111, "helo", "user@domain1",
 		WithContext(ctx))
-	if res != None || err != context.Canceled {
-		t.Errorf("expected none/context cancelled, got %q / %q", res, err)
+	if res != PermError || err != context.Canceled {
+		t.Errorf("expected permerror/context cancelled, got %q / %q", res, err)
 	}
 }