例外，在发送电子邮件

我发送邮件，但它给我的异常例外，在发送电子邮件

Mailbox name not allowed. The server response was: sorry, relaying denied from your location [182.72.17.210] (#5.7.1)

我的代码

public static string SendMailHtmlFromat(string sForm, string sTo, string sSub, string sMsg) 
     { 
      MailMessage mailmsg = new MailMessage(); 
      mailmsg.To.Add(sTo); 
      mailmsg.From = new MailAddress(sForm); 
      mailmsg.Subject = sSub; 
      mailmsg.IsBodyHtml = true; 
      mailmsg.Body = sMsg; 
      try 
      { 
       //SmtpClient smtp = new SmtpClient("smtpout.secureserver.net", 25); 
       SmtpClient smtp = new SmtpClient("relay-hosting.secureserver.net", 25); 
       smtp.Credentials = new System.Net.NetworkCredential("[email protected]", "Smart123"); 
       smtp.Send(mailmsg); 
      } 
      catch (Exception e) 
      {  } 
      return ""; 
     }

是他们SmtpClient宣布

来源

2010-12-01 neha

联系您的ISP（relay-hosting.secureserver.net）。乍一看，中继似乎是从您的位置否认... – 2010-12-01 06:55:24

例外，在发送电子邮件

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