send email in asp.net

i want to send email from my web site with using smtp server
my email is ajay@diamondforgood.com
how i send this using c# coding
LVL 5
chandresh43Asked:
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Ryan ChongConnect With a Mentor Commented:
you can try customize this:

using System.Net.Mail;

//..

public static Boolean sendMail(String SenderName, String SenderEmail, String ReceiverName, String ReceiverEmail, String Subject, String Body, Boolean isHTML, String SMTPHost, int SMTPPort, Boolean isAuthenticationNeeded, String SMTPUserName, String SMTPUserPwd)
        {
            try
            {
                SmtpClient sclient = new SmtpClient(SMTPHost, SMTPPort);
                sclient.DeliveryMethod = SmtpDeliveryMethod.Network;
                if (isAuthenticationNeeded)
                {
                    sclient.Credentials = new System.Net.NetworkCredential(SMTPUserName, SMTPUserPwd);                    
                }

                MailMessage mail = new MailMessage();
                mail.Subject = Subject;
                mail.IsBodyHtml = isHTML;
                mail.Body = Body;
                mail.BodyEncoding = System.Text.Encoding.UTF8;
                if (SenderName == "")
                {
                    mail.From = new MailAddress(SenderEmail);
                }
                else
                {
                    mail.From = new MailAddress(SenderEmail, SenderName);
                }
                mail.SubjectEncoding = System.Text.Encoding.UTF8;
                if (ReceiverName == "")
                {
                    mail.To.Add(ReceiverEmail);
                }
                else
                {
                    mail.To.Add(new MailAddress(ReceiverEmail, ReceiverName));
                }
                sclient.Send(mail);
                return true;
            }
            catch (SmtpException)
            {
                return false;
            }
            catch (Exception)
            {
                return false;
            }      
        }



study on System.Net.Mail classes for more info.
http://msdn.microsoft.com/en-us/library/system.net.mail.smtpclient.aspx
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DhaestCommented:
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chandresh43Author Commented:
which host i use
my web address is www.diamondforgood.com
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Ryan ChongCommented:
>>which host i use

basically something like smtp.yourdomain.com or mail.yourdomain.com

You need to check with the Admin or ping the domain to find out..
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chandresh43Author Commented:
it give error
 Failure sending mail.
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Ryan ChongCommented:
What error message you get here?

Make sure your smtp settings are correct.
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chandresh43Author Commented:
here is my coding

 protected void Page_Load(object sender, EventArgs e)
    {
        sendMail("ajay", "ajay@diamondforgood.com", "ajay", "ohgod143@yahoo.com", "diamond", "ajay", true, "mail@diamondforgood.com", 8433, true, "ajay", "master");
           

    }


    public static Boolean sendMail(String SenderName, String SenderEmail, String ReceiverName, String ReceiverEmail, String Subject, String Body, Boolean isHTML, String SMTPHost, int SMTPPort, Boolean isAuthenticationNeeded, String SMTPUserName, String SMTPUserPwd)
    {
            SmtpClient sclient = new SmtpClient(SMTPHost, SMTPPort);
            sclient.DeliveryMethod = SmtpDeliveryMethod.Network;
            if (isAuthenticationNeeded)
            {
                sclient.Credentials = new System.Net.NetworkCredential(SMTPUserName, SMTPUserPwd);
            }

            MailMessage mail = new MailMessage();
            mail.Subject = Subject;
            mail.IsBodyHtml = isHTML;
            mail.Body = Body;
            mail.BodyEncoding = System.Text.Encoding.UTF8;
            if (SenderName == "")
            {
                mail.From = new MailAddress(SenderEmail);
            }
            else
            {
                mail.From = new MailAddress(SenderEmail, SenderName);
            }
            mail.SubjectEncoding = System.Text.Encoding.UTF8;
            if (ReceiverName == "")
            {
                mail.To.Add(ReceiverEmail);
            }
            else
            {
                mail.To.Add(new MailAddress(ReceiverEmail, ReceiverName));
            }
            sclient.Send(mail);
            return true;
        }
       

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Ryan ChongCommented:
"mail@diamondforgood.com" is invalid, try get the correct SMTP Host and other settings from the site admin...
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chandresh43Author Commented:
where i found correct mail setting
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chandresh43Author Commented:
you said to ping then
i ping mail@diamondforgood.com -t
and it give me replay
so i use it
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Ryan ChongCommented:
I get this:

C:\Documents and Settings\Administrator>ping mail@diamondforgood.com
Ping request could not find host mail@diamondforgood.com. Please check the name
and try again.

please recheck your SMTP settings... ?
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chandresh43Author Commented:
ping mail.diamondforgood.com -t
and this give me replay
type type in run

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Ryan ChongCommented:
So now you still not able to send out emails?

If you not able to, when you debugging your scripts, what's the error message you captured from the exception?
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Ryan ChongCommented:
>>what's the error message you captured from the exception?

I mean the detailed message you get..
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chandresh43Author Commented:
Bad sequence of commands. The server response was: 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.



thats error i got now
i use host
<system.net>
    <mailSettings>
      <smtp>
        <network host ="mail.diamondforgood.com" userName ="user" password ="pass" defaultCredentials="true"  />        
     
       
      </smtp>
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Ryan ChongCommented:
can you post the scripts you using?
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chandresh43Author Commented:
MailMessage mail = new MailMessage();
        mail.From = new MailAddress(Txtfrom.Text);
        mail.To.Add(Txtto.Text);
        mail.Subject = txtsub.Text;
        mail.Body = txtbody.Text;
        SmtpClient smp = new SmtpClient();


        smp.Send(mail);

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