对于hotmail端口995没有响应整个imap_open

Question

$host = 'outlook.office365.com';
$port = '995';
$username = '[e-mail]';
$password ='testpassword';
$connection1 = imap_open('{'.$host.':'.$port.'/ssl/novalidate-cert}INBOX', 
$username, $password) or die('Cannot connect to Hotmail: ' . 
imap_last_error());

On Port 993 (IMAP) its working fine, but not for SSL. i am not sure what parameter will after port for SSL.