Cannot send email in ASP.NET through Godaddy servers

Question

I have an ASP.NET application hosted on Godaddy that I want to send email from. When it runs, I get: Mailbox name not allowed. The server response was: sorry, relaying denied from your location. The important parts of the code and Web.config are below:

msg = new MailMessage("[email protected]", email);
        msg.Subject = "GreekTools Registration";
        msg.Body =
            "You have been invited by your organization to register for the GreekTools recruitment application.<br/><br/>" +
            url + "<br/><br/>" +
            "Sincerely,<br/>" +
            "The GreekTools Team";

        msg.IsBodyHtml = true;

        client = new SmtpClient();
        client.Host = "relay-hosting.secureserver.net";

        client.Send(msg);

<system.net>
<mailSettings>
  <smtp from="[email protected]">
    <network host="relay-hosting.secureserver.net" port="25" userName="********" password="*********" />
  </smtp>
</mailSettings>

Broadcast

Answer 1

1- If your site is hosted on godaddy you may use "relay-hosting.secureserver.net" without credentials.

2- If your site is hosted outside of godaddy you may use "smtpout.secureserver.net" with you email account credentials.

PS: Please change port 3535 if you have problems with 25

Hosted On GoDaddy

    <system.net>
      <mailSettings>
       <smtp from="[email protected]">
        <network host="relay-hosting.secureserver.net"/>
       </smtp>
      </mailSettings>
    </system.net>

External

  <system.net>
    <mailSettings>
      <smtp from="[email protected]">
        <network host="smtpout.secureserver.net" 
           userName="[email protected]" password="your_password_here" 
           port="25" />
      </smtp>
    </mailSettings>
  </system.net>

Plerre

I was having issues when using relay-hosting.secureserver.net as the smtpClient.Host. Sometimes it took a long time to send, and others it would send at all throwing an exception: "Mailbox name not allowed. The server response was: sorry, relaying denied from your location". Changing my host to smptout.secureserver.net resolved this issue and allows the mail to be sent in seconds. Thank you very much :D +1 – Bandoline

godaddy made some changes with their email infrastructure. You can create your email account in different data centers. so you can chose America, europe or asia servers. For that reason you need to use a smtp server for your region. like "smtpout.europe.secureserver.net" – Plerre

My problem was port 25. Thanks a lot for suggesting port 3535. Worked like a charm! – Okeechobee

Answer 2

Here's my email class:

public class Email
{
    public enum MailAddressType
    {
        From = 1,
        Bcc
    }

    private static MailAddress _from = null;

    public static void SendEmail(string to, string subject, string body)
    {
        SendEmail(to, subject, body, From, string.Empty);
    }

    public static void SendEmail(string to, string subject, string body, string from)
    {
        SendEmail(to, subject, body, from, MailAddressType.From);
    }

    public static void SendEmail(string to, string subject, string body, string addresses, MailAddressType addressType)
    {
        MailAddress from = From;
        string bcc = string.Empty;

        if (MailAddressType.From == addressType)
        {
            from = new MailAddress(addresses);
        }
        else
        {
            bcc = addresses;
        }

        SendEmail(to, subject, body, from, bcc);
    }

    private static void SendEmail(string to, string subject, string body, MailAddress from, string bcc)
    {
        MailMessage message = new MailMessage();
        message.From = From;
        message.To.Add(to);
        if (!string.IsNullOrEmpty(bcc))
        {
            message.Bcc.Add(bcc);
        }
        message.ReplyTo = from;
        message.Subject = subject;
        message.Body = HttpContext.Current.Server.HtmlEncode(body);
        SmtpClient smtp = new SmtpClient();
        smtp.Send(message);
    }

    public static MailAddress From
    {
        get
        {
            if (null == _from)
            {
                SmtpSection section = (SmtpSection)ConfigurationManager.GetSection("system.net/mailSettings/smtp");
                string address = section.From;
                string displayName = ConfigurationManager.AppSettings["fromEmailDisplayName"];
                _from = new MailAddress(address, displayName);
            }
            return _from;
        }
    }
}

And here are the related web.config settings:

<appSettings>
    <add key="fromEmailDisplayName" value="Firstname Lastname"/>
</appSettings>

<system.net>
    <mailSettings>
        <smtp deliveryMethod="Network" from="[email protected]">
            <network host="relay-hosting.secureserver.net" />
        </smtp>
    </mailSettings>
</system.net>

For me, the key was "message.From = From" and "message.ReplyTo = from". GoDaddy seems to want the message to come from an address in your domain. So for contact pages, use your default email address as the From and set the sender as the ReplyTo. Email goes through fine after that.

Anglo

Answer 3

This is likely a reply from the SMTP server because the machine attempting to send email has not been whitelisted (or is blacklisted for SPAM). Is relay-hosting.secureserver.net a GoDaddy server, or is it on a different network? You might want to find a GoDaddy server that enables email to be relayed. I would imagine a lot of shared hosting providers have restrictions today.

I would find out what type of SMTP server you are using and what anti-spam measures are in place. The administrator may be able to add the GoDaddy server to the whitelist of allowed hosts. You need to be very careful and make sure that you application cannot be used as a proxy for a spammer. Make sure to validate all input to ensure it it safe.

Rimple

relay-hosting.secureserver.net is GoDaddy's smtp relay server. – Broadcast

Answer 4

Check your hostname. Are you sure your account isn't configured to use mail.greektools.net ?That's the default format for GoDaddy webhosting..

Coquetry

I did try to change it to mail.greektools.net and I got a generic "failure to send" exception (or something like that). – Broadcast

Answer 5

set

defaultCredentials="false"

in your network element

     <network host="relay-hosting.secureserver.net" port="25" userName="********" password="*********" defaultCredentials="false" />

Statist

Answer 6

Just for a test. Remove the username and password values from the web.config.

Then, in your code set

//call this line, before you call .Send
client.Credentials = CredentialCache.DefaultNetworkCredentials; 
client.Send(msg)

Boulevard

Answer 7

I just asked GoDaddy, how to set up a SMTP form mailer, and they told me that I'd need to use a Relay Server, with no username, no password, and no port. The server name to use was, the same name that you used.

Amorphous

Answer 8

What email or relay server should I use in my ASP.NET 3.5 code?

You do not need to provide a user name and password for this relay server.

Maier

Answer 9

var message = new MailMessage();
message.To.Add(new MailAddress("email-address")); 
message.From = new MailAddress("email-address");  
message.Subject = "subject";
message.Body = string.Format("message-body");
message.IsBodyHtml = true;
using (var smtp = new SmtpClient())
{
    smtp.Host = "relay-hosting.secureserver.net";
    smtp.EnableSsl = false;
    smtp.Credentials = CredentialCache.DefaultNetworkCredentials;
    await smtp.SendMailAsync(message);
}

Mohamed

Answer 10

For those who want to know what should be C# code in addition to the accepted answer, below code worked for me. Please note that "from" address is already mentioned in web.config in the accepted answer, so no need to mention it in C# code.

    public static void SendMail(string emailid, string subject, string body)
    {
        System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient();

        System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();

        msg.To.Add(new MailAddress(emailid));

        msg.Subject = subject;
        msg.IsBodyHtml = true;
        msg.Body = body;

        client.Send(msg);
    }

Buyse

Answer 11

Try below code:

smtp.Host = "relay-hosting.secureserver.net";
smtp.Port = 25;
smtp.Credentials = new System.Net.NetworkCredential("[email protected]", "*******");

It worked for me.

Beggs

Maybe give an explanation on how this code answers the question? – Atlantes

Answer 12

The code working for me for Go Daddy email send from c# code

var smtp = new SmtpClient
{
  Host = "smtpout.secureserver.net",
  Port = 25,
  UseDefaultCredentials = false,
  Credentials = new NetworkCredential("domain.xyz.com", "password...")
};
using (var message = new MailMessage("domain.xyz.com", "domain.xyz.com")
 {
    IsBodyHtml = false,
    Subject = modal.Subject,
    Body = modal.Body
 })
  {
   smtp.Send(message);
  }

Electric