Myth:Auth does not do any certificate verification so this is coming from some other layer. From your comment it sounds like probably your email configuration is trying to verify your local server cert, or something.

i has change my option of Config\Email.php with this
public $protocol = 'smtp';
public $SMTPHost = 'smtp.gmail.com';
public $SMTPPort = 465;
public $SMTPCrypto = 'ssl';
public $mailType = 'html';

do you have any suggest for my configure and what should i do?

It is not going to be an app configuration, it is an issue with your server. if you are going to use an external SMTP server with SSL verification you need to fix your certs. @lonnieezell this can close.