How to send email from an asp.net application using gmail smtp

Question

In an asp.net mvc application I am trying to send email using gmail smtp and for that I have used these setting

            SmtpClient smtpClient = new SmtpClient("smtp.gmail.com", Convert.ToInt32(587));
            System.Net.NetworkCredential credentials = new System.Net.NetworkCredential("my-emial", "app-pass");
            smtpClient.Credentials = credentials;
            smtpClient.EnableSsl = true;         
            smtpClient.Send(msg);

It is working fine on local server but not working on godaddy server. On godaddy server it show this error

An attempt was made to access a socket in a way forbidden by its access permissions 142.251.16.108:587