diff --git a/EmailValidator/Parser/DomainPart.php b/EmailValidator/Parser/DomainPart.php
index d57b1c0..28f450f 100644
--- a/EmailValidator/Parser/DomainPart.php
+++ b/EmailValidator/Parser/DomainPart.php
@@ -1,6 +1,5 @@
 <?php
 
-
 namespace Egulias\EmailValidator\Parser;
 
 use Egulias\EmailValidator\EmailLexer;
@@ -133,9 +132,7 @@ class DomainPart extends Parser
         do {
             $prev = $this->lexer->getPrevious();
 
-            if ($this->lexer->token['type'] === EmailLexer::S_SLASH) {
-                throw new CharNotAllowed();
-            }
+            $this->checkNotAllowedChars($this->lexer->token);
 
             if ($this->lexer->token['type'] === EmailLexer::S_OPENPARENTHESIS) {
                 $this->parseComments();
@@ -173,6 +170,14 @@ class DomainPart extends Parser
 
         return $domain;
     }
+    
+    private function checkNotAllowedChars($token)
+    {
+        $notAllowed = [EmailLexer::S_BACKSLASH => true, EmailLexer::S_SLASH=> true];
+        if (isset($notAllowed[$token['type']])) {
+            throw new CharNotAllowed();
+        }
+    }
 
     protected function parseDomainLiteral()
     {
diff --git a/EmailValidator/Validation/MultipleValidationWithAnd.php b/EmailValidator/Validation/MultipleValidationWithAnd.php
index f9920f8..3bcb8bf 100644
--- a/EmailValidator/Validation/MultipleValidationWithAnd.php
+++ b/EmailValidator/Validation/MultipleValidationWithAnd.php
@@ -25,6 +25,7 @@ class MultipleValidationWithAnd implements EmailValidation
         $result = true;
         $errors = [];
         foreach ($this->validations as $validation) {
+            $emailLexer->reset();
             $result = $result && $validation->isValid($email, $emailLexer);
             $this->warnings = array_merge($this->warnings, $validation->getWarnings());
             $errors[] = $validation->getError();
diff --git a/Tests/EmailValidator/Validation/RFCValidationTest.php b/Tests/EmailValidator/Validation/RFCValidationTest.php
index 999d19a..c1bfb4b 100644
--- a/Tests/EmailValidator/Validation/RFCValidationTest.php
+++ b/Tests/EmailValidator/Validation/RFCValidationTest.php
@@ -127,6 +127,7 @@ class RFCValidationTest extends \PHPUnit_Framework_TestCase
             ['.example@localhost'],
             ['ex\ample@localhost'],
             ['example@local\host'],
+            ['example@localhost\\'],
             ['example@localhost.'],
             ['user name@example.com'],
             ['username@ example . com'],