#region 创建邮箱
        public void CreateEmail(DirectoryEntry de, string username, string duty, string account)
        {
            ADClass.CDuty cduty = new ADClass.CDuty();
            //判断是否是SH开头的            
            if (account.Substring(0, 2).ToUpper() == "SH")
            {
                DataTable dt = cduty.DutyByDutyName(duty);
                if (dt != null && dt.Rows.Count > 0)
                {
                    de.Properties["homeMDB"].Value = ywyMDB;
                    de.Properties["homeMTA"].Value = MTA;
                    de.Properties["mailNickname"].Value = account;
                    de.Properties["msExchHomeServerName"].Value = msExchHomeServerName;
                    de.Properties["legacyExchangeDN"].Value = legacyExchangeDN + account;
                    de.CommitChanges();
                }
                else
                {
                    de.Properties["homeMDB"].Value = MDB;
                    de.Properties["homeMTA"].Value = MTA;
                    de.Properties["mailNickname"].Value = account;
                    de.Properties["msExchHomeServerName"].Value = msExchHomeServerName;
                    de.Properties["legacyExchangeDN"].Value = legacyExchangeDN + account;
                    de.CommitChanges();
                }
            }
        }
        #endregion