Ticket #12503: 12503-2.diff

wp-includes/formatting.php

@@ -1520 +1520 @@
                 }
         }
 
-        // DNS
-        // Check the domain has a valid MX and A resource record
-        if ( $check_dns && function_exists( 'checkdnsrr' ) && !( checkdnsrr( $domain . '.', 'MX' ) || checkdnsrr( $domain . '.', 'A' ) ) ) {
-                return apply_filters( 'is_email', false, $email, 'dns_no_rr' );
-        }
-
         // Congratulations your email made it!
         return apply_filters( 'is_email', $email, $email, null );
 }