smtp - где ошибка?

- [Fri Dec 04 22:18:59 2009] [error] [client 212.7.19.41] PHP Warning: mail() [function.mail]: Failed to connect to mailserver at "smtp.mail.ru" port 25, verify your "SMTP" and "smtp_port" setting in php.ini or use ini_set() in W:\\www\\wp-content\\plugins\\xpertmailer-advanced-php-mail-engine\\XPM4\\PHP5\\MAIL5.php on line 736, referer: **********