Error sending mail in asp.net

Question

0.00/5 (No votes)

See more:

hi

I use the code below to send mail using yahoo smtp and ended up with error failed sending mail pl check the code and tell me where I went wrong

C#

public void sendMail()
  {
      SmtpClient client = new SmtpClient();
      MailMessage message = new MailMessage();
      client.Port = 465;
      //client.Host = "smtp.gmail.com";
      client.Host = "plus.smtp.mail.yahoo.com";//"smtp.bizmail.yahoo.com";
      client.UseDefaultCredentials = true;
      client.Credentials = new System.Net.NetworkCredential("abinav@yahoo.com", "MyPassword");
      client.EnableSsl = true;
      try
      {
          MailAddress SendTo = new MailAddress("mahesh@yahoo.com");
         // MailAddress SendTo = new MailAddress("abinav@yahoo.com");
          MailAddress SendFrom = new MailAddress("abinav@yahoo.com");
          message = new MailMessage(SendFrom, SendTo);
          message.Body = "Test Mail";
          message.Subject = "Test Mail";
          client.Send(message);
      }
      catch (Exception ex)
      {
      }
  }

and I get the error Failure Sending mail

and the inner exception states "Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host." It works well with smtp.gmail.com but not with yahoo pl help me its very urgent

Posted 16-Jan-12 22:39pm

Shashwath7

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

bbirajdar · Answer 1 · 2012-01-16T22:43:00

The EnableSsl property specifies whether SSL is used to access the specified SMTP mail server.

The default value for this property can also be set in a machine or application configuration file. Any changes made to the EnableSsl property override the configuration file settings.

The SmtpClient class only supports the SMTP Service Extension for Secure SMTP over Transport Layer Security as defined in RFC 3207. In this mode, the SMTP session begins on an unencrypted channel, then a STARTTLS command is issued by the client to the server to switch to secure communication using SSL. See RFC 3207 published by the Internet Engineering Task Force (IETF) for more information.

An alternate connection method is where an SSL session is established up front before any protocol commands are sent. This connection method is sometimes called SMTP/SSL, SMTP over SSL, or SMTPS and by default uses port 465. This alternate connection method using SSL is not currently supported.

You can use ClientCertificates to specify which client certificates should be used to establish the SSL connection. The ServerCertificateValidationCallback allows you to reject the certificate provided by the SMTP server. The SecurityProtocol property allows you to specify the version of the SSL protocol to use.

http://msdn.microsoft.com/en-us/library/system.net.mail.smtpclient.enablessl.aspx[^]

It works with System.Web.Mail (which is marked as obsolete):

SARAVANAKUMAR.M · Answer 2 · 2012-01-19T23:43:00

MailMessage oMsg = new MailMessage();
                oMsg.From = new MailAddress("xxx@gmail.com", "xxx");
                oMsg.To.Add(new MailAddress("yyy@gmail.com", "xxx"));
                oMsg.Subject = "Packet Parsing Problem";
                oMsg.Body = " Problem Occuread test mail";
                oMsg.SubjectEncoding = System.Text.Encoding.UTF8;
                oMsg.BodyEncoding = System.Text.Encoding.UTF8;
                oMsg.IsBodyHtml = false;
                oMsg.Priority = MailPriority.High;
 
                SmtpClient oSmtp = new SmtpClient("smtp.gmail.com", 587);
                oSmtp.DeliveryMethod = SmtpDeliveryMethod.Network;
                oSmtp.EnableSsl = true;
 
                NetworkCredential oCredential = new NetworkCredential("xxx@gmail.com", "123456aA");
                oSmtp.UseDefaultCredentials = false;
                oSmtp.Credentials = oCredential;
                oSmtp.Send(oMsg);

Try this , it's Working for me .

Error sending mail in asp.net

2 solutions

Solution 1

Solution 2

Add your solution here

Preview 0