Unable to send email to other domains using System.Net.Mail.SmtpClient

Question

Please look at the following code:

client.Credentials = new NetworkCredential(SMTP_SERVER_USERNAME, SMTP_SERVER_PASSWORD);
client.EnableSsl = false;
client.Host          


        

Answer 1

I noticed your message.To.Add(RECIPIENT_ADDRESS) might have been a string. I've had issues with this in the past. Wrap it in a MailAddress object and it should work.