Sending email asynch

I'm wanting to send email asynch from my web app. If I send within that thread it works, but if I send asynch it fails. Following is a code snippet.

MailMessage message = new MailMessage(from, mTo);
message.Subject = sSubj;
message.Body = sBody;
message.IsBodyHtml = true;
SmtpClient client = new SmtpClient(sSMTPServer);
System.Net.NetworkCredential nc = new System.Net.NetworkCredential(sSenderEmail, sSenderPass);
client.Credentials = nc;
client.Port = 587;
//client.EnableSsl = true;

client.SendCompleted += new SendCompletedEventHandler(client_SendCompleted);
client.SendAsync(message, "\"Sending..\"");
//client.Send(message);

 

Are you getting any specific errors? This way we can have the general idea of what is going wrong here.

In the majority of cases I can say it's likely to be some SMTP setting being incorrect.