Failure to send email

Hi,

Here is at least part of my c# code that's supposed to send an email to a client:




SmtpClient myMailClient = new SmtpClient();
MailMessage myMailMessage = new MailMessage();
string address = "";
try

string mailHost = "smtp.aquarius.com.au";
string userName = "xxxxxx";
string password = "xxxx";
string fromName = "Sales";
string fromAddress = [email protected];
string emailBody = "";

emailBody = "Hi #firstName# etc etc etc"

myMailMessage.To.Add(new MailAddress(address, fullName));
myMailMessage.Bcc.Add(new MailAddress("[email protected]", "Sales Department"));
// Obtains the e-mail address of the person sending the message.
myMailMessage.From = new MailAddress(fromAddress, fromName);
// Obtains the subject of the e-mail message
myMailMessage.Subject = productName + " Licence Purchase";
myMailMessage.Body = emailBodyPersonalised;
myMailMessage.IsBodyHtml = true;
myMailMessage.Priority = MailPriority.High;
myMailMessage.Attachments.Add(new Attachment(licenceFileName));
myMailClient.Host = mailHost;
myMailClient.Port = 25;
myMailClient.DeliveryMethod = SmtpDeliveryMethod.Network;
// Initializes a new instance of the System.Net.NetworkCredential class.
NetworkCredential myMailCredential = new NetworkCredential();
myMailCredential.UserName = userName;
myMailCredential.Password = password;
myMailClient.UseDefaultCredentials = false;
myMailClient.Credentials = myMailCredential;
try
{
myMailClient.Send(myMailMessage);
}
catch (SmtpException exSmtp)
{
logger.FatalException("Mail failed - SMTP Error: " +address +" | ", exSmtp);
}
catch (Exception exGen)
{
logger.FatalException("SendingMailFailed_General Exception", exGen);
}
finally
{
myMailMessage.Attachments.Dispose();
}


As far as I can tell, all the information is collected and properly assigned however the email to the orginal recipient fails to be delivered. My generated log entry shows the following:


System.Net.Mail.SmtpFailedRecipientException: Mailbox unavailable. The server response was: web139.discountasp.net (web139) [64.209.135.9]:3013 is currently not


The error message is trucated for some reason but assumably follows on with ' not available'.


The blind carbon copy is delivered no problems.


I have confirmed the To: address is valid and properly formatted.



Can someone please give me some suggestions as to where I should look to find the source of the problem.


TIA>