Could I mail before deployment the project?

I coded for mailing in the form but now presently its not working, so i asked with my colleague about it, he replied : we cant mail before deployment it wont work. so I want to confirm it ,is it right?

I tried with this below code.

public void sendMail() 

{ 

try 

{ 

MailMessage objeto_mail = new MailMessage(); 

SmtpClient client = new SmtpClient();                 

client.Port = 25;                 

client.Host = "smtp.internal.elifeindia.in";                 

client.Timeout = 10000;                 

client.DeliveryMethod = SmtpDeliveryMethod.Network;                 

client.UseDefaultCredentials = false;                 

client.Credentials = new System.Net.NetworkCredential("[email protected]", "9052251772");                 

objeto_mail.From = new MailAddress("[email protected]");                

 objeto_mail.To.Add(new MailAddress(txtEmailId.Text));                 

objeto_mail.Subject = "Password Recover";                

 objeto_mail.Body = "Message";                 

client.Send(objeto_mail); } catch (Exception ex) { Response.Write(ex.ToString()); 

} 

}