How to send mail in asp.net through proxy server

Question

i am trying to send mail through asp.net using the code mentioned below. it works fine without proxy environment. but now i am working with proxy servers and use proxy settings to connect to internet. it gives error 'Failure Sending Mail' Please anyone help ?

MailMessage msg = new MailMessage("xyz@gmail.com", TextBox1.Text);
msg.Subject = TextBox2.Text;
msg.Body = TextBox3.Text;
SmtpClient s = new SmtpClient();
s.Host = "smtp.gmail.com";
s.EnableSsl = true;
s.Credentials = new NetworkCredential("xyz@gmail.com", "password");
s.Send(msg);

score 2 · Answer 1 · answered Oct 03 '11 at 07:18

2

Add this to your web.config and replace your.proxy.address with the address of proxy server:

<system.net>
    <defaultProxy enabled="true">
      <proxy proxyaddress="your.proxy.address"/>
    </defaultProxy>
  </system.net>

answered Oct 03 '11 at 07:18

Waqas

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Hi waqas, thanks for the suggestion but i've tried this code and Again it shows same error message 'Failure sending mail' Please help – Dhiraj Oct 04 '11 at 09:20

score 0 · Answer 2 · answered Jun 08 '15 at 06:47

It would have worked from your home connection where there is no firewall, but to work same code in a company where they are using a corporate firewall, you need to request them for opening SMTP ports for your smtp server. Default is 25 gmail uses 587 and 465

How to send mail in asp.net through proxy server

2 Answers2