Why emails sent by .NET SmtpClient are missing Message-Id?
问题 This is my SMTP settings in App.Config: <system.net> <mailSettings> <smtp from="Reminder <reminder@myserver.com>"> <network host="mail.myserver.net" port="587" password="my password" userName="reminder@myserver.com" enableSsl="true"/> </smtp> </mailSettings> </system.net> And this is how I'm sending the emails: message.SubjectEncoding = System.Text.Encoding.UTF8; message.BodyEncoding = System.Text.Encoding.UTF8; smtpClient.Send(message); this is working ! but the only problem is, my emails