使用System.Net.Mail.SmtpClient将电子邮件发送到通讯组列表

Question

I'm sending email to a distribution list using System.Net.Mail.SmtpClient Here is the method I use. xyz@domain.com is the distribution list.

var strMailServer = ConfigurationManager.AppSettings["MailServer"];
var fromAddress = new MailAddress("abc@domain.com");
var bodyMsg = "BodyText;
var message = new MailMessage();
var smtpClient = new SmtpClient(strMailServer)
{
    Credentials = new NetworkCredential("", ""),
    Port = 25,
    EnableSsl = true
};

message.From = fromAddress;
message.To.Add("xyz@domain.com");
message.Subject = _context.Fields["Subject"].Value;
message.IsBodyHtml = true;
message.Body = bodyMsg;
smtpClient.Send(message);

The mail is not delivered to xyz@domain.com distribution list. Am I missing something?

Answer 1

创建通讯组列表时，取消选中“要求所有发件人都经过身份验证”

Answer 2

If you are using a username and password other than your windows credentials, you need to set UseDefaultCredentials to false before providing the new credentials:

var smtpClient = new SmtpClient(strMailServer)
{
    UseDefaultCredentials = false,
    Credentials = new NetworkCredential("", ""),
    Port = 25,
    EnableSsl = true
};