Proplem when send email

[Debo]

I get this when i try to send an email:

Warning: fsockopen() [function.fsockopen]: unable to connect to tls://smtp.gmail.com:465 (Unable to find the socket transport "tls" - did you forget to enable it when you configured PHP?) in [path]/includes/class_mail.php on line 604

Warning: Unable to connect to SMTP server in [path]/includes/class_mail.php on line 586

Any one know what's the proplem here?