I am trying to send a mail from a simple .net page. I continually getting an error like:
"The server response was: 553 sorry, that domain isn't in my list of allowed rcpthosts "
If I use a email address within my domain, it works, but for all other email addresses it does not.
Any hints or suggestions greatly appreciated.
Here is my test script :
<%@ Page Language="C#" Debug="true" ContentType="text/html" ResponseEncoding="iso-8859-1" %>
<%@ Import Namespace="System.Web.Mail" %>
<script runat="server">
void Page_Load(Object sender , EventArgs e)
{
SmtpMail.SmtpServer = "mail.mydomain.com";
MailMessage objMailMessage;
string strHTMLBody;
// Create the HTML Message Body
strHTMLBody = "<html><head>" + "<title>Dynamic email</title>" + "</head>[b]" +
"<p>This is a test email<p></body></html>";
// Create the Mail Message
objMailMessage = new MailMessage();
objMailMessage.From = "powell@mydomain.com";
objMailMessage.To = "someexternal@emailaddress.com";
objMailMessage.Subject = "Testing..!?";
objMailMessage.Body = strHTMLBody;
objMailMessage.BodyFormat = MailFormat.Html;
// Send the Mail Message
SmtpMail.Send( objMailMessage );
Response.Write("HTML Email Sent!");
}
</script>