diff --git a/admin_domains.php b/admin_domains.php
index be9f508e..af3c18a1 100644
--- a/admin_domains.php
+++ b/admin_domains.php
@@ -282,10 +282,23 @@ if ($page == 'domains' || $page == 'overview') {
 					standard_error('admin_domain_emailsystemhostname');
 				}
 
+				if (strpos($_POST['domain'], '--') !== false) {
+					standard_error('domain_nopunycode');
+				}
+
 				$domain = $idna_convert->encode(preg_replace(array(
 					'/\:(\d)+$/',
 					'/^https?\:\/\//'
 				), '', validate($_POST['domain'], 'domain')));
+
+				// Check whether domain validation is enabled and if, validate the domain
+				if (Settings::Get('system.validate_domain') && ! validateDomain($domain)) {
+					standard_error(array(
+						'stringiswrong',
+						'mydomain'
+					));
+				}
+
 				$subcanemaildomain = intval($_POST['subcanemaildomain']);
 
 				$isemaildomain = 0;
@@ -679,12 +692,6 @@ if ($page == 'domains' || $page == 'overview') {
 						'stringisempty',
 						'mydomain'
 					));
-				} // Check whether domain validation is enabled and if, validate the domain
-elseif (Settings::Get('system.validate_domain') && ! validateDomain($domain)) {
-					standard_error(array(
-						'stringiswrong',
-						'mydomain'
-					));
 				} elseif ($documentroot == '') {
 					standard_error(array(
 						'stringisempty',
diff --git a/customer_domains.php b/customer_domains.php
index daccf9f5..c34f296a 100644
--- a/customer_domains.php
+++ b/customer_domains.php
@@ -247,6 +247,11 @@ if ($page == 'overview') {
 	} elseif ($action == 'add') {
 		if ($userinfo['subdomains_used'] < $userinfo['subdomains'] || $userinfo['subdomains'] == '-1') {
 			if (isset($_POST['send']) && $_POST['send'] == 'send') {
+
+				if (strpos($_POST['subdomain'], '--') !== false) {
+					standard_error('domain_nopunycode');
+				}
+
 				$subdomain = $idna_convert->encode(preg_replace(array('/\:(\d)+$/', '/^https?\:\/\//'), '', validate($_POST['subdomain'], 'subdomain', '', 'subdomainiswrong')));
 				$domain = $idna_convert->encode($_POST['domain']);
 				$domain_stmt = Database::prepare("SELECT * FROM `" . TABLE_PANEL_DOMAINS . "`
diff --git a/install/froxlor.sql b/install/froxlor.sql
index dc692f2f..202d4d5a 100644
--- a/install/froxlor.sql
+++ b/install/froxlor.sql
@@ -558,7 +558,7 @@ INSERT INTO `panel_settings` (`settinggroup`, `varname`, `value`) VALUES
 	('panel', 'password_numeric', '0'),
 	('panel', 'password_special_char_required', '0'),
 	('panel', 'password_special_char', '!?<>§$%+#=@'),
-	('panel', 'version', '0.9.35.1'),
+	('panel', 'version', '0.9.36'),
 	('panel', 'db_version', '201605170');
 
 
diff --git a/lng/english.lng.php b/lng/english.lng.php
index bb631418..72873745 100644
--- a/lng/english.lng.php
+++ b/lng/english.lng.php
@@ -2014,3 +2014,5 @@ $lng['serversettings']['dnseditorenable']['description'] = 'Allows admins and cu
 $lng['dns']['howitworks'] = 'Here you can manage DNS entries for your domain. Note that froxlor will automatically generate NS/MX/A/AAAA records for you. The custom entries are prefered, only missing entries will be automatically generated.';
 $lng['serversettings']['dns_server']['title'] = 'DNS server daemon';
 $lng['serversettings']['dns_server']['description'] = 'Remember that daemons have to be configured using froxlors configuration templates';
+
+$lng['error']['domain_nopunycode'] = 'You must not specify punycode (IDNA). The domain will automatically be converted';
diff --git a/lng/german.lng.php b/lng/german.lng.php
index fc42c0ad..ee44bec4 100644
--- a/lng/german.lng.php
+++ b/lng/german.lng.php
@@ -1667,3 +1667,5 @@ $lng['serversettings']['dnseditorenable']['description'] = 'Erlaubt es Admins un
 $lng['dns']['howitworks'] = 'Hier können DNS Einträge für die Domain verwaltet werden. Beachte das Froxlor automatisch NS/MX/A/AAAA Einträge generiert. Die benutzerdefinierten Einträge werden bevorzugt, nur fehlende Einträge werden automatisch generiert.';
 $lng['serversettings']['dns_server']['title'] = 'DNS Server Dienst';
 $lng['serversettings']['dns_server']['description'] = 'Dienste müssen mit den froxlor Konfigurationstemplates konfiguriert werden';
+
+$lng['error']['domain_nopunycode'] = 'Die Eingabe von Punycode (IDNA) ist nicht notwendig. Die Domain wird automatisch konvertiert.';