C# sending mails failed

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Hi All,
I am trying to figure out what suddenly happened to my project. It was working fine but now its not.
this is stack trace

   at System.Net.Mail.SmtpClient.Send(MailMessage message)
   at WindowsKeyloggerTool.frmSettings.SendTestMail(String message) in c:\users\avinash\documents\visual studio 2010\Projects\WindowsKeyloggerTool\WindowsKeyloggerTool\frmSettings.cs:line 103
   at WindowsKeyloggerTool.frmSettings.ValidateUserCredentials() in c:\users\avinash\documents\visual studio 2010\Projects\WindowsKeyloggerTool\WindowsKeyloggerTool\frmSettings.cs:line 75
and inner exception
Unable to find an entry point named 'EnumerateSecurityPackagesW' in DLL 'security.dll'.
   at System.Net.UnsafeNclNativeMethods.SafeNetHandles_SECURITY.EnumerateSecurityPackagesW(Int32& pkgnum, SafeFreeContextBuffer_SECURITY& handle)
   at System.Net.SafeFreeContextBuffer.EnumeratePackages(SecurDll Dll, Int32& pkgnum, SafeFreeContextBuffer& pkgArray)
   at System.Net.SSPISecureChannelType.EnumerateSecurityPackages(Int32& pkgnum, SafeFreeContextBuffer& pkgArray)
   at System.Net.SSPIWrapper.EnumerateSecurityPackages(SSPIInterface SecModule)
   at

Please help me.

Posted 13-May-11 20:05pm

sunder.tinwar

Updated 13-May-11 20:23pm

Kim Togo

v2

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OriginalGriff 14-May-11 2:14am

OK, so that's the stack trace: what was the error message?

1 solution

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Santoshshrest · Answer 1 · 2011-05-13T20:17:00

How about you try this.....

first check connection...

C#

public bool Checking_Internet_Connection()
      {
          try
          {

              System.Net.Sockets.TcpClient clnt = new System.Net.Sockets.TcpClient("www.google.com", 80);

              clnt.Close();

              return true;

          }

then send message to required email address....

C#

public void Send_Email(Email_Message_Details Email_msg_details)
      {
          try
          {
              MailMessage mail = new MailMessage();
              SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");
              mail.From = new MailAddress("gmailaccount");
              mail.To.Add("email address you want to send");
              mail.Subject = Email_msg_details.SUBJECT;
              mail.Body = Email_msg_details.BODYMESSAGE;

              SmtpServer.Port = 587;
              SmtpServer.Credentials = new System.Net.NetworkCredential("gmailaccount", "password");
              SmtpServer.EnableSsl = true;
              SmtpServer.Send(mail);
          }
          catch
          {
              return;
          }
      }