C # calls QQ mailbox SMTP send mail modified version code

 try {mailmessage mm = new MailMessage ();                MailAddress Fromma = new MailAddress ("xxxx@qq.com");                MailAddress Toma = new MailAddress ("MMMMMMM@qq.com", null); Mm.                from = Fromma; Recipient mm.                To.add ("MMMMMM@qq.com"); Mailbox title mm.                Subject = "Hello Dear:"; Mm.                Isbodyhtml = true; Message content mm. Body = "Hello Mr Meteor!"                "; Encoding format for content mm.                bodyencoding = System.Text.Encoding.UTF8; Mm.                ReplyTo = Toma; Mm.                Sender =fromma; Mm.                Isbodyhtml = false; Mm.                Deliverynotificationoptions = deliverynotificationoptions.onsuccess; Mm. Cc.                ADD (Toma);                SmtpClient sc = new SmtpClient ();                NetworkCredential NC = new NetworkCredential (); nc. UserName = "XXXXX@qq.com";//your e-mail address NC. Password = "zzzzz";//Your email password, here's the secretCode is xxxxx@qq.com mailbox password, special instructions under ~ SC.                useDefaultCredentials = true; Sc.                Deliverymethod = Smtpdeliverymethod.network; Sc.                Credentials = NC; If this is reported to mail from the address must be same as authorization user this error, is your QQ mailbox does not open SMTP,//to your own mailbox settings can be! Under the account, if is 163 mailbox, below should become smtp.163.com SC.                Host = "smtp.qq.com"; Sc.            Send (mm); } catch (Exception ex) {throw new Exception (ex).            Message); }

This is I use my 2 QQ test success, there are problems I hope you correct ~ ~

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