mail sending in asp.net error

Question

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I want to send a mail from my server, i used the following code but it produces the following error, kindly give me solution to correct it

Code Used:

C#

string s = "kishore";
MailMessage mail = new MailMessage();
mail.To = "kishorethoppil@gmail.com";
mail.From = "kishorethoppil@gmail.com";
mail.Subject = "House Boat Cruise";
mail.BodyFormat = MailFormat.Html;
mail.Body = s;
SmtpMail.SmtpServer = "mail.keratravels.com";
SmtpMail.Send(mail);
lblDisplay.Text = "Successfully Posted";

ERROR:
The server rejected one or more recipient addresses. The server response was: 503 This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server.

Posted 29-Jul-10 17:57pm

kishore Rajendran

Updated 29-Jul-10 19:38pm

Sandeep Mewara

v2

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Sandeep Mewara · Answer 1 · 2010-07-29T19:41:00

The error is self explanatory. You have not provided the Authenticating Username/Password that will be used in order to access the account.

You need to make Web.Config changes.
Have a look here: Sending Email in ASP.NET 2.0 [^]
Something like:

XML

<configuration>
  <!-- Add the email settings to the <system.net> element -->
  <system.net>
    <mailSettings>
      <smtp>
        <network
             host="relayServerHostname"
             port="portNumber"
             userName="username"
             password="password" />
      </smtp>
    </mailSettings>
  </system.net>
  <system.web>
    ...
  </system.web>
</configuration>

Sushma_Patel · Answer 2 · 2010-07-29T19:48:00

Solution 2

Refer This [^]

Posted 29-Jul-10 19:48pm

Sushma_Patel

Arun Jacob · Answer 3 · 2010-07-29T19:49:00

If you are unable to solve an error in your own way, then second best way to troubleshoot an error is just search that error code in Google and get some expert's opinion. So always do an initial search before posting it somewhere in a forum.

Check if this link is useful for you,

http://weblogs.asp.net/gad/archive/2003/11/02/35288.aspx[^]

mail sending in asp.net error

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