Index: t3lib/utility/class.t3lib_utility_mail.php
===================================================================
--- t3lib/utility/class.t3lib_utility_mail.php	(revision 42568)
+++ t3lib/utility/class.t3lib_utility_mail.php	(working copy)
@@ -103,6 +103,8 @@
 			if (t3lib_utility_PhpOptions::isSafeModeEnabled() && !is_null($additionalParameters)) {
 				$additionalParameters = null;
 			}
+				// Prevent message from breaking by SMTP-syntaxed End of Mail: "\n.\n".
+			$messageBody = preg_replace('/^\.$/m','. ',$messageBody);
 
 			if (is_null($additionalParameters)) {
 				$success = @mail($to, $subject, $messageBody, $additionalHeaders);
@@ -207,4 +209,4 @@
 	}
 }
 
-?>
\ No newline at end of file
+?>