new info form

app/UI/Client/Setting/Forms/InfoForm.php

@@ -39,7 +39,7 @@ class InfoForm extends BaseForm implements ClientArea
         $this->addField(new Hidden("selfdomain"));
         $field = new Text("mxthurdata");
         $field->setRawTitle('MX Eintrag ThurData Vorgabe');
-        $field->setHtmlAttributes(['readonly']);
+        $field->setHtmlAttributes(['disabled']);
         $this->addField($field);
         $field = new Text("mxactive");
         $field->setRawTitle('Aktueller MX Eintrag');

app/UI/Client/Setting/Providers/InfoSettingDataProvider.php

@@ -101,7 +101,7 @@ class InfoSettingDataProvider extends BaseDataProvider
             'dkim' => $dkim,
             'selfdns' => $selfDns,
             'selfdomain' => $selfdomain,
-            'mxthurdata' => $params['serverhostname'],
+            'mxthurdata' => $this->getWhmcsParamByKey('serverhostname'),
             'spfthurdata' => $this->spfConfig,
         ];
         $this->availableValues['dnsrecords'] = $dnsRecords;