PHPMailer Error

I'm with the following problem:

when sending mail using phpmailer it displays the message of connection time out.

- My code:

require_once ('Mailer/PHPMailerAutoload.php');

$mail = new PHPMailer();

$mail->CharSet = "UTF-8";

$body = "mail for client";

$mail->isSMTP();

$mail->Host = "smtp.zoho.com";

$mail->SMTPAuth = true;

$mail->SMTPDebug = 3;

$mail->SMTPSecure = "ssl";

$mail->Port = 465;

$mail->Username = "nei.agripino@zoho.com";

$mail->Password = "mypassword";

$mail->SetFrom("nei.agripino@zoho.com", "Nei Agripino");

$mail->AddReplyTo("nei.agripino@zoho.com", "Nei Agripino");

$mail->Subject = "Subject mail";

$mail->MsgHTML($body);

$mail->AddAddress($address, "Nei");

$mail->Send();

- Msg error:

2016-08-25 18:52:50 Connection: opening to ssl://smtp.zoho.com:465, timeout=300, options=array ( ) 2016-08-25 18:53:00 SMTP ERROR: Failed to connect to server: Connection timed out (110) 2016-08-25 18:53:00 SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting

- if I use for gmail with the same port it works, ie is not my firewall server.

- for example I use the thunderbird works.

- This is a blocking firewall you? it checks a header?

- I need to implement this solution for the customer.