Fix domain part check in email address validation function. Added test cases.

Aleksander Machniak

2012-08-17 c83b83eeae9806cb60ea3f41f2cff055b0c6ed7e

 program/include/rcube_utils.php

@@ -110,6 +110,11 @@
                }
            }

            // last domain part
            if (preg_match('/[^a-zA-Z]/', array_pop($domain_array))) {
                return false;
            }

            $rcube = rcube::get_instance();

            if (!$dns_check || !$rcube->config->get('email_dns_check')) {