symfony · fabpot · Sep 10, 2017 · Aug 7, 2017
diff --git a/DependencyInjection/SwiftmailerTransportFactory.php b/DependencyInjection/SwiftmailerTransportFactory.php
@@ -39,6 +39,7 @@ public static function createTransport(array $options, RequestContext $requestCo
                new \Swift_Transport_Esmtp_Auth_CramMd5Authenticator(),
                new \Swift_Transport_Esmtp_Auth_LoginAuthenticator(),
                new \Swift_Transport_Esmtp_Auth_PlainAuthenticator(),
+                new \Swift_Transport_Esmtp_Auth_NTLMAuthenticator()
            ));
            $smtpAuthHandler->setUsername($options['username']);
            $smtpAuthHandler->setPassword($options['password']);
@@ -146,7 +147,7 @@ public static function validateConfig($options)
            throw new \InvalidArgumentException(sprintf('The %s encryption is not supported', $options['encryption']));
        }

-        if (!in_array($options['auth_mode'], array('plain', 'login', 'cram-md5', null), true)) {
+        if (!in_array($options['auth_mode'], array('plain', 'login', 'cram-md5', 'ntlm', null), true)) {
            throw new \InvalidArgumentException(sprintf('The %s authentication mode is not supported', $options['auth_mode']));
        }
    }

diff --git a/Resources/config/schema/swiftmailer-1.0.xsd b/Resources/config/schema/swiftmailer-1.0.xsd
@@ -90,6 +90,7 @@
      <xsd:enumeration value="plain" />
      <xsd:enumeration value="login" />
      <xsd:enumeration value="cram-md5" />
+      <xsd:enumeration value="ntlm" />
    </xsd:restriction>
  </xsd:simpleType>