I received "Unable to authenticate at present (435)" error and I am trying to figure out what might have caused this problem.
Here is the stack trace:
at Rebex.Net.Smtp.cgrDQE(Int32 , Boolean )
at Rebex.Net.Smtp.cHoXin(String , String , SmtpAuthentication , GssApiProvider )
at Rebex.Net.Smtp.Login(String userName, String password, SmtpAuthentication method)
Your help would be greatly appreciated!