diff --git a/lib/Froxlor/Api/Commands/Admins.php b/lib/Froxlor/Api/Commands/Admins.php
index 426b1f82..747edfc9 100644
--- a/lib/Froxlor/Api/Commands/Admins.php
+++ b/lib/Froxlor/Api/Commands/Admins.php
@@ -231,7 +231,7 @@ class Admins extends \Froxlor\Api\ApiCommand implements \Froxlor\Api\ResourceEnt
 			$idna_convert = new \Froxlor\Idna\IdnaWrapper();
 			$email = $idna_convert->encode(\Froxlor\Validate\Validate::validate($email, 'email', '', '', array(), true));
 			$def_language = \Froxlor\Validate\Validate::validate($def_language, 'default language', '', '', array(), true);
-			$custom_notes = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $custom_notes), 'custom_notes', '/^[^\0]*$/', '', array(), true);
+			$custom_notes = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $custom_notes), 'custom_notes', \Froxlor\Validate\Validate::REGEX_CONF_TEXT, '', array(), true);
 
 			if (Settings::Get('system.mail_quota_enabled') != '1') {
 				$email_quota = - 1;
@@ -531,7 +531,7 @@ class Admins extends \Froxlor\Api\ApiCommand implements \Froxlor\Api\ResourceEnt
 				$idna_convert = new \Froxlor\Idna\IdnaWrapper();
 				$email = $idna_convert->encode(\Froxlor\Validate\Validate::validate($email, 'email', '', '', array(), true));
 				$def_language = \Froxlor\Validate\Validate::validate($def_language, 'default language', '', '', array(), true);
-				$custom_notes = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $custom_notes), 'custom_notes', '/^[^\0]*$/', '', array(), true);
+				$custom_notes = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $custom_notes), 'custom_notes', \Froxlor\Validate\Validate::REGEX_CONF_TEXT, '', array(), true);
 				$theme = \Froxlor\Validate\Validate::validate($theme, 'theme', '', '', array(), true);
 				$password = \Froxlor\Validate\Validate::validate($password, 'password', '', '', array(), true);
 
diff --git a/lib/Froxlor/Api/Commands/Customers.php b/lib/Froxlor/Api/Commands/Customers.php
index ee747ef6..25d679e7 100644
--- a/lib/Froxlor/Api/Commands/Customers.php
+++ b/lib/Froxlor/Api/Commands/Customers.php
@@ -336,7 +336,7 @@ class Customers extends \Froxlor\Api\ApiCommand implements \Froxlor\Api\Resource
 				$email = $idna_convert->encode(\Froxlor\Validate\Validate::validate($email, 'email', '', '', array(), true));
 				$customernumber = \Froxlor\Validate\Validate::validate($customernumber, 'customer number', '/^[A-Za-z0-9 \-]*$/Di', '', array(), true);
 				$def_language = \Froxlor\Validate\Validate::validate($def_language, 'default language', '', '', array(), true);
-				$custom_notes = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $custom_notes), 'custom_notes', '/^[^\0]*$/', '', array(), true);
+				$custom_notes = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $custom_notes), 'custom_notes', \Froxlor\Validate\Validate::REGEX_CONF_TEXT, '', array(), true);
 
 				if (Settings::Get('system.mail_quota_enabled') != '1') {
 					$email_quota = - 1;
@@ -928,7 +928,7 @@ class Customers extends \Froxlor\Api\ApiCommand implements \Froxlor\Api\Resource
 			$fax = \Froxlor\Validate\Validate::validate($fax, 'fax', '/^[0-9\- \+\(\)\/]*$/', '', array(), true);
 			$email = $idna_convert->encode(\Froxlor\Validate\Validate::validate($email, 'email', '', '', array(), true));
 			$customernumber = \Froxlor\Validate\Validate::validate($customernumber, 'customer number', '/^[A-Za-z0-9 \-]*$/Di', '', array(), true);
-			$custom_notes = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $custom_notes), 'custom_notes', '/^[^\0]*$/', '', array(), true);
+			$custom_notes = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $custom_notes), 'custom_notes', \Froxlor\Validate\Validate::REGEX_CONF_TEXT, '', array(), true);
 			if (! empty($allowed_phpconfigs)) {
 				$allowed_phpconfigs = array_map('intval', $allowed_phpconfigs);
 			}
diff --git a/lib/Froxlor/Api/Commands/DirOptions.php b/lib/Froxlor/Api/Commands/DirOptions.php
index 981fd02f..8fb44e9a 100644
--- a/lib/Froxlor/Api/Commands/DirOptions.php
+++ b/lib/Froxlor/Api/Commands/DirOptions.php
@@ -69,7 +69,7 @@ class DirOptions extends \Froxlor\Api\ApiCommand implements \Froxlor\Api\Resourc
 		$error500path = $this->getParam('error500path', true, '');
 
 		// validation
-		$path = \Froxlor\FileDir::makeCorrectDir(\Froxlor\Validate\Validate::validate($path, 'path', '', '', array(), true));
+		$path = \Froxlor\FileDir::makeCorrectDir(\Froxlor\Validate\Validate::validate($path, 'path', \Froxlor\Validate\Validate::REGEX_DIR, '', array(), true));
 		$userpath = $path;
 		$path = \Froxlor\FileDir::makeCorrectDir($customer['documentroot'] . '/' . $path);
 
diff --git a/lib/Froxlor/Api/Commands/DirProtections.php b/lib/Froxlor/Api/Commands/DirProtections.php
index 8c4ea904..b79785ef 100644
--- a/lib/Froxlor/Api/Commands/DirProtections.php
+++ b/lib/Froxlor/Api/Commands/DirProtections.php
@@ -60,7 +60,7 @@ class DirProtections extends \Froxlor\Api\ApiCommand implements \Froxlor\Api\Res
 		$authname = $this->getParam('directory_authname', true, '');
 
 		// validation
-		$path = \Froxlor\FileDir::makeCorrectDir(\Froxlor\Validate\Validate::validate($path, 'path', '', '', array(), true));
+		$path = \Froxlor\FileDir::makeCorrectDir(\Froxlor\Validate\Validate::validate($path, 'path', \Froxlor\Validate\Validate::REGEX_DIR, '', array(), true));
 		$path = \Froxlor\FileDir::makeCorrectDir($customer['documentroot'] . '/' . $path);
 		$username = \Froxlor\Validate\Validate::validate($username, 'username', '/^[a-zA-Z0-9][a-zA-Z0-9\-_]+\$?$/', '', array(), true);
 		$authname = \Froxlor\Validate\Validate::validate($authname, 'directory_authname', '/^[a-zA-Z0-9][a-zA-Z0-9\-_ ]+\$?$/', '', array(), true);
diff --git a/lib/Froxlor/Api/Commands/Domains.php b/lib/Froxlor/Api/Commands/Domains.php
index e01e6ea4..4732d029 100644
--- a/lib/Froxlor/Api/Commands/Domains.php
+++ b/lib/Froxlor/Api/Commands/Domains.php
@@ -429,8 +429,8 @@ class Domains extends \Froxlor\Api\ApiCommand implements \Froxlor\Api\ResourceEn
 						$zonefile = '';
 					}
 
-					$specialsettings = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $specialsettings), 'specialsettings', '/^[^\0]*$/', '', array(), true);
-					\Froxlor\Validate\Validate::validate($documentroot, 'documentroot', '', '', array(), true);
+					$specialsettings = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $specialsettings), 'specialsettings', \Froxlor\Validate\Validate::REGEX_CONF_TEXT, '', array(), true);
+					\Froxlor\Validate\Validate::validate($documentroot, 'documentroot', \Froxlor\Validate\Validate::REGEX_DIR, '', array(), true);
 
 					// If path is empty and 'Use domain name as default value for DocumentRoot path' is enabled in settings,
 					// set default path to subdomain or domain name
@@ -1162,8 +1162,8 @@ class Domains extends \Froxlor\Api\ApiCommand implements \Froxlor\Api\ResourceEn
 					$dkim = $result['dkim'];
 				}
 
-				$specialsettings = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $specialsettings), 'specialsettings', '/^[^\0]*$/', '', array(), true);
-				$documentroot = \Froxlor\Validate\Validate::validate($documentroot, 'documentroot', '', '', array(), true);
+				$specialsettings = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $specialsettings), 'specialsettings', \Froxlor\Validate\Validate::REGEX_CONF_TEXT, '', array(), true);
+				$documentroot = \Froxlor\Validate\Validate::validate($documentroot, 'documentroot', \Froxlor\Validate\Validate::REGEX_DIR, '', array(), true);
 
 				// when moving customer and no path is specified, update would normally reuse the current document-root
 				// which would point to the wrong customer, therefore we will re-create that directory
diff --git a/lib/Froxlor/Api/Commands/Emails.php b/lib/Froxlor/Api/Commands/Emails.php
index f6c2abba..c3bc5df5 100644
--- a/lib/Froxlor/Api/Commands/Emails.php
+++ b/lib/Froxlor/Api/Commands/Emails.php
@@ -405,10 +405,6 @@ class Emails extends \Froxlor\Api\ApiCommand implements \Froxlor\Api\ResourceEnt
 		Customers::decreaseUsage($customer['customerid'], 'email_forwarders_used', '', $number_forwarders);
 		Admins::decreaseUsage($customer['customerid'], 'email_forwarders_used', '', $number_forwarders);
 
-		if ($delete_userfiles) {
-			\Froxlor\System\Cronjob::inserttask('7', $customer['loginname'], $result['email_full']);
-		}
-
 		// delete address
 		$stmt = Database::prepare("DELETE FROM `" . TABLE_MAIL_VIRTUAL . "` WHERE `customerid`= :customerid AND `id`= :id");
 		Database::pexecute($stmt, array(
diff --git a/lib/Froxlor/Api/Commands/IpsAndPorts.php b/lib/Froxlor/Api/Commands/IpsAndPorts.php
index 5657fa35..b4213ed0 100644
--- a/lib/Froxlor/Api/Commands/IpsAndPorts.php
+++ b/lib/Froxlor/Api/Commands/IpsAndPorts.php
@@ -171,17 +171,17 @@ class IpsAndPorts extends \Froxlor\Api\ApiCommand implements \Froxlor\Api\Resour
 		if ($this->isAdmin() && $this->getUserDetail('change_serversettings')) {
 
 			$ip = \Froxlor\Validate\Validate::validate_ip2($this->getParam('ip'), false, 'invalidip', false, true, false, false, true);
-			$port = \Froxlor\Validate\Validate::validate($this->getParam('port', true, 80), 'port', '/^(([1-9])|([1-9][0-9])|([1-9][0-9][0-9])|([1-9][0-9][0-9][0-9])|([1-5][0-9][0-9][0-9][0-9])|(6[0-4][0-9][0-9][0-9])|(65[0-4][0-9][0-9])|(655[0-2][0-9])|(6553[0-5]))$/Di', array(
+			$port = \Froxlor\Validate\Validate::validate($this->getParam('port', true, 80), 'port', \Froxlor\Validate\Validate::REGEX_PORT, array(
 				'stringisempty',
 				'myport'
 			), array(), true);
 			$listen_statement = ! empty($this->getBoolParam('listen_statement', true, 0)) ? 1 : 0;
 			$namevirtualhost_statement = ! empty($this->getBoolParam('namevirtualhost_statement', true, 0)) ? 1 : 0;
 			$vhostcontainer = ! empty($this->getBoolParam('vhostcontainer', true, 0)) ? 1 : 0;
-			$specialsettings = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $this->getParam('specialsettings', true, '')), 'specialsettings', '/^[^\0]*$/', '', array(), true);
+			$specialsettings = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $this->getParam('specialsettings', true, '')), 'specialsettings', \Froxlor\Validate\Validate::REGEX_CONF_TEXT, '', array(), true);
 			$vhostcontainer_servername_statement = ! empty($this->getBoolParam('vhostcontainer_servername_statement', true, 1)) ? 1 : 0;
-			$default_vhostconf_domain = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $this->getParam('default_vhostconf_domain', true, '')), 'default_vhostconf_domain', '/^[^\0]*$/', '', array(), true);
-			$docroot = \Froxlor\Validate\Validate::validate($this->getParam('docroot', true, ''), 'docroot', '', '', array(), true);
+			$default_vhostconf_domain = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $this->getParam('default_vhostconf_domain', true, '')), 'default_vhostconf_domain', \Froxlor\Validate\Validate::REGEX_CONF_TEXT, '', array(), true);
+			$docroot = \Froxlor\Validate\Validate::validate($this->getParam('docroot', true, ''), 'docroot', \Froxlor\Validate\Validate::REGEX_DIR, '', array(), true);
 
 			if ((int) Settings::Get('system.use_ssl') == 1) {
 				$ssl = ! empty($this->getBoolParam('ssl', true, 0)) ? intval($this->getBoolParam('ssl', true, 0)) : 0;
@@ -189,9 +189,9 @@ class IpsAndPorts extends \Froxlor\Api\ApiCommand implements \Froxlor\Api\Resour
 				$ssl_key_file = \Froxlor\Validate\Validate::validate($this->getParam('ssl_key_file', $ssl, ''), 'ssl_key_file', '', '', array(), true);
 				$ssl_ca_file = \Froxlor\Validate\Validate::validate($this->getParam('ssl_ca_file', true, ''), 'ssl_ca_file', '', '', array(), true);
 				$ssl_cert_chainfile = \Froxlor\Validate\Validate::validate($this->getParam('ssl_cert_chainfile', true, ''), 'ssl_cert_chainfile', '', '', array(), true);
-				$ssl_specialsettings = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $this->getParam('ssl_specialsettings', true, '')), 'ssl_specialsettings', '/^[^\0]*$/', '', array(), true);
+				$ssl_specialsettings = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $this->getParam('ssl_specialsettings', true, '')), 'ssl_specialsettings', \Froxlor\Validate\Validate::REGEX_CONF_TEXT, '', array(), true);
 				$include_specialsettings = ! empty($this->getBoolParam('include_specialsettings', true, 0)) ? 1 : 0;
-				$ssl_default_vhostconf_domain = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $this->getParam('ssl_default_vhostconf_domain', true, '')), 'ssl_default_vhostconf_domain', '/^[^\0]*$/', '', array(), true);
+				$ssl_default_vhostconf_domain = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $this->getParam('ssl_default_vhostconf_domain', true, '')), 'ssl_default_vhostconf_domain', \Froxlor\Validate\Validate::REGEX_CONF_TEXT, '', array(), true);
 				$include_default_vhostconf_domain = ! empty($this->getBoolParam('include_default_vhostconf_domain', true, 0)) ? 1 : 0;
 			} else {
 				$ssl = 0;
@@ -368,17 +368,17 @@ class IpsAndPorts extends \Froxlor\Api\ApiCommand implements \Froxlor\Api\Resour
 			));
 
 			$ip = \Froxlor\Validate\Validate::validate_ip2($this->getParam('ip', true, $result['ip']), false, 'invalidip', false, true, false, false, true);
-			$port = \Froxlor\Validate\Validate::validate($this->getParam('port', true, $result['port']), 'port', '/^(([1-9])|([1-9][0-9])|([1-9][0-9][0-9])|([1-9][0-9][0-9][0-9])|([1-5][0-9][0-9][0-9][0-9])|(6[0-4][0-9][0-9][0-9])|(65[0-4][0-9][0-9])|(655[0-2][0-9])|(6553[0-5]))$/Di', array(
+			$port = \Froxlor\Validate\Validate::validate($this->getParam('port', true, $result['port']), 'port', \Froxlor\Validate\Validate::REGEX_PORT, array(
 				'stringisempty',
 				'myport'
 			), array(), true);
 			$listen_statement = $this->getBoolParam('listen_statement', true, $result['listen_statement']);
 			$namevirtualhost_statement = $this->getBoolParam('namevirtualhost_statement', true, $result['namevirtualhost_statement']);
 			$vhostcontainer = $this->getBoolParam('vhostcontainer', true, $result['vhostcontainer']);
-			$specialsettings = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $this->getParam('specialsettings', true, $result['specialsettings'])), 'specialsettings', '/^[^\0]*$/', '', array(), true);
+			$specialsettings = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $this->getParam('specialsettings', true, $result['specialsettings'])), 'specialsettings', \Froxlor\Validate\Validate::REGEX_CONF_TEXT, '', array(), true);
 			$vhostcontainer_servername_statement = $this->getParam('vhostcontainer_servername_statement', true, $result['vhostcontainer_servername_statement']);
-			$default_vhostconf_domain = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $this->getParam('default_vhostconf_domain', true, $result['default_vhostconf_domain'])), 'default_vhostconf_domain', '/^[^\0]*$/', '', array(), true);
-			$docroot = \Froxlor\Validate\Validate::validate($this->getParam('docroot', true, $result['docroot']), 'docroot', '', '', array(), true);
+			$default_vhostconf_domain = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $this->getParam('default_vhostconf_domain', true, $result['default_vhostconf_domain'])), 'default_vhostconf_domain', \Froxlor\Validate\Validate::REGEX_CONF_TEXT, '', array(), true);
+			$docroot = \Froxlor\Validate\Validate::validate($this->getParam('docroot', true, $result['docroot']), 'docroot', \Froxlor\Validate\Validate::REGEX_DIR, '', array(), true);
 
 			if ((int) Settings::Get('system.use_ssl') == 1) {
 				$ssl = $this->getBoolParam('ssl', true, $result['ssl']);
@@ -386,9 +386,9 @@ class IpsAndPorts extends \Froxlor\Api\ApiCommand implements \Froxlor\Api\Resour
 				$ssl_key_file = \Froxlor\Validate\Validate::validate($this->getParam('ssl_key_file', $ssl, $result['ssl_key_file']), 'ssl_key_file', '', '', array(), true);
 				$ssl_ca_file = \Froxlor\Validate\Validate::validate($this->getParam('ssl_ca_file', true, $result['ssl_ca_file']), 'ssl_ca_file', '', '', array(), true);
 				$ssl_cert_chainfile = \Froxlor\Validate\Validate::validate($this->getParam('ssl_cert_chainfile', true, $result['ssl_cert_chainfile']), 'ssl_cert_chainfile', '', '', array(), true);
-				$ssl_specialsettings = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $this->getParam('ssl_specialsettings', true, $result['ssl_specialsettings'])), 'ssl_specialsettings', '/^[^\0]*$/', '', array(), true);
+				$ssl_specialsettings = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $this->getParam('ssl_specialsettings', true, $result['ssl_specialsettings'])), 'ssl_specialsettings', \Froxlor\Validate\Validate::REGEX_CONF_TEXT, '', array(), true);
 				$include_specialsettings = $this->getBoolParam('include_specialsettings', true, $result['include_specialsettings']);
-				$ssl_default_vhostconf_domain = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $this->getParam('ssl_default_vhostconf_domain', true, $result['ssl_default_vhostconf_domain'])), 'ssl_default_vhostconf_domain', '/^[^\0]*$/', '', array(), true);
+				$ssl_default_vhostconf_domain = \Froxlor\Validate\Validate::validate(str_replace("\r\n", "\n", $this->getParam('ssl_default_vhostconf_domain', true, $result['ssl_default_vhostconf_domain'])), 'ssl_default_vhostconf_domain', \Froxlor\Validate\Validate::REGEX_CONF_TEXT, '', array(), true);
 				$include_default_vhostconf_domain = $this->getBoolParam('include_default_vhostconf_domain', true, $result['include_default_vhostconf_domain']);
 			} else {
 				$ssl = 0;
diff --git a/lib/Froxlor/Validate/Validate.php b/lib/Froxlor/Validate/Validate.php
index cbc08060..d2b7f849 100644
--- a/lib/Froxlor/Validate/Validate.php
+++ b/lib/Froxlor/Validate/Validate.php
@@ -4,6 +4,12 @@ namespace Froxlor\Validate;
 class Validate
 {
 
+	const REGEX_DIR = '/^|(\/[\w-]+)+$/';
+
+	const REGEX_PORT = '/^(([1-9])|([1-9][0-9])|([1-9][0-9][0-9])|([1-9][0-9][0-9][0-9])|([1-5][0-9][0-9][0-9][0-9])|(6[0-4][0-9][0-9][0-9])|(65[0-4][0-9][0-9])|(655[0-2][0-9])|(6553[0-5]))$/Di';
+
+	const REGEX_CONF_TEXT = '/^[^\0]*$/';
+
 	/**
 	 * Validates the given string by matching against the pattern, prints an error on failure and exits
 	 *
diff --git a/tests/Traffic/TrafficTest.php b/tests/Traffic/TrafficTest.php
index 9dfafedf..4c53cb93 100644
--- a/tests/Traffic/TrafficTest.php
+++ b/tests/Traffic/TrafficTest.php
@@ -111,6 +111,19 @@ class TrafficTest extends TestCase
 		$this->assertEquals(3, $result['list'][1]['customerid']);
 	}
 
+	public function testAdminTrafficListCustomersFilterCustomer()
+	{
+		global $admin_userdata;
+
+		$json_result = Traffic::getLocal($admin_userdata, array(
+			'customer_traffic' => 1,
+			'loginname' => 'test1'
+		))->listing();
+		$result = json_decode($json_result, true)['data'];
+		$this->assertEquals(1, $result['count']);
+		$this->assertEquals(1, $result['list'][0]['customerid']);
+	}
+
 	public function testCustomerTrafficList()
 	{
 		global $admin_userdata;