Catch Swift exceptions when sending form data via e-mail (see contao#6941)

Author: leofeyer

system/docs/CHANGELOG.md

@@ -4,6 +4,9 @@ Contao Open Source CMS changelog
 Version 3.3.0 (2014-05-XX)
 --------------------------
 
+### Fixed
+Catch Swift exceptions when sending form data via e-mail (see #6941).
+
 ### Fixed
 Try all locale variations when loading TinyMCE (see #6952).
 

system/modules/core/forms/Form.php

@@ -410,10 +410,17 @@ protected function processFormData($arrSubmitted, $arrLabels)
 			}
 
 			$uploaded = strlen(trim($uploaded)) ? "\n\n---\n" . $uploaded : '';
-
-			// Send e-mail
 			$email->text = \String::decodeEntities(trim($message)) . $uploaded . "\n\n";
-			$email->sendTo($recipients);
+
+			// Send the e-mail
+			try
+			{
+				$email->sendTo($recipients);
+			}
+			catch (\Swift_SwiftException $e)
+			{
+				$this->log('Form "' . $this->title . '" could not be sent: ' . $e->getMessage(), __METHOD__, TL_ERROR);
+			}
 		}
 
 		// Store the values in the database