authcate

Check the discussion here: [verify SMTP certificate in PHP](http://stackoverflow.com/questions/13402866/how-do-i-verify-a-tls-smtp-certificate-is-valid-in-php) I hope this is what you are looking for. <?php $server = "smtp.gmail.com"; // Who I connect to $myself = "my_server.example.com"; // Who I am $cabundle = '/etc/ssl/cacert.pem'; // Where my root certificates are // Verify server. There's not much we …