yes,I have use the SMTP on my computer to test, I use gmail smtp this time,but there is another error.
PHP Warning: fsockopen() [<a href='function.fsockopen'>function.fsockopen</a>]: unable to connect to ssl://smtp.gmail.com:465 (Unable to find the socket transport "ssl" - did you forget to enable it when you configured PHP?) in D:\\wamp\\www\\qa-include\\qa-class.smtp.php on line 122, referer: http://localhost/?qa=admin&qa_1=mailing
there is something wrong with php.ini?