/// <summary>
        /// Checks if specified DomainName exists.
        /// </summary>
        /// <param name="source">DomainName or Emails address.</param>
        /// <returns></returns>
        public bool DomainExists(string source)
        {
            bool retVal = false;

            // Source is Emails
            if(source.IndexOf("@") > -1){
                source = source.Substring(source.IndexOf("@")+1);
            }

            switch(m_DB_Type)
            {
                #region DB_Type.XML

                case DB_Type.XML:
                    using(DataView dv = new DataView(dsDomains.Tables["Domains"])){
                        dv.RowFilter = "DomainName='" + source + "'";

                        if(dv.Count > 0){
                            retVal = true;
                        }
                    }
                    break;

                #endregion

                #region DB_Type.MSSQL

                case DB_Type.MSSQL:
                    using(WSqlCommand sqlCmd = new WSqlCommand(m_ConStr,"lspr_DomainExists")){
                        sqlCmd.AddParameter("@DomainName",SqlDbType.NVarChar,source);

                        DataSet ds = sqlCmd.Execute();
                        ds.Tables[0].TableName = "Domains";

                        if(ds.Tables["Domains"].Rows.Count > 0){
                            return true;
                        }
                        else{
                            return false;
                        }
                    }

                #endregion

                #region DB_Type.WebServices

                case DB_Type.WebServices:
                    using(RemoteAdmin eng = new RemoteAdmin()){
                        _Core.InitWebService(m_WebServicesUrl,m_WebServicesPwd,m_WebServicesUser,eng);

                        return eng.DomainExists(source);
                    }

                #endregion
            }

            return retVal;
        }