How to send mail from asp net with iis6 smtp in a dedicated server


ASP.NET is a popular language used for developing web . One common requirement in web applications is the ability to send emails. In this article, we will explore how to send mail from ASP.NET using the IIS6 SMTP server on a dedicated server.

Setting up the SMTP Server

we can send emails from ASP.NET, we need to configure the SMTP server on our dedicated server. Here are the to set up the IIS6 SMTP server:

  1. Open the Information Services (IIS) Manager.
  2. the local computer node and navigate to the “SMTP Virtual Server” node.
  3. Right-click on the “Default SMTP Virtual Server” and “Properties”.
  4. In the “” tab, ensure that the IP address is set to the IP address of your dedicated server.
  5. In the “Access” tab, click on the “Relay” button and add the IP address of your dedicated server to the list of allowed relay hosts.
  6. Click “OK” to save the changes.

Sending Email from ASP.NET

Now that we have set up the SMTP server, let's see how we can send emails from ASP.NET. Here is an example code snippet:

using System;
using System.Net.Mail;

public  EmailSender
    public void SendEmail(string to, string subject, string body)
            MailMessage mail = new MailMessage();
             smtpClient = new SmtpClient("localhost");

            mail.From = new MailAddress("");
            mail.Subject = subject;
            mail.Body = body;

        catch (Exception ex)
            // Handle exception

In the above code, we create a new instance of the MailMessage class and set the necessary properties such as the sender, recipient, subject, and body of the email. We also create an instance of the SmtpClient class and specify the SMTP server address (in this case, “localhost”). Finally, we call the Send method of the SmtpClient class to send the email.


Sending emails from ASP.NET using the IIS6 SMTP server on a dedicated server is a straightforward process. By following the steps to set up the SMTP server and using the provided code example, you can easily incorporate email functionality into your ASP.NET web applications.

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