public static int UpdateMailList(MailList item)
        {
            // check account
            int accountCheck = SecurityContext.CheckAccount(DemandAccount.NotDemo | DemandAccount.IsActive);
            if (accountCheck < 0) return accountCheck;

            // load original meta item
            MailList origItem = (MailList)PackageController.GetPackageItem(item.Id);
            if (origItem == null)
                return BusinessErrorCodes.ERROR_MAIL_LISTS_PACKAGE_ITEM_NOT_FOUND;

            // check package
            int packageCheck = SecurityContext.CheckPackage(origItem.PackageId, DemandPackage.IsActive);
            if (packageCheck < 0) return packageCheck;

            // check recipients number
            if (!CheckRecipientsAllowedNumber(origItem.PackageId, Quotas.MAIL_MAXLISTMEMBERS, item.Members))
                return BusinessErrorCodes.ERROR_MAIL_LISTS_RECIPIENTS_LIMIT;

            // place log record
            TaskManager.StartTask("MAIL_LIST", "UPDATE", origItem.Name);
            TaskManager.ItemId = item.Id;

            try
            {
                // restore original props
                if (item.Password == "")
                    item.Password = CryptoUtils.Decrypt(origItem.Password);

                // get service
                MailServer mail = new MailServer();
                ServiceProviderProxy.Init(mail, origItem.ServiceId);
                item.Name = origItem.Name;
                item.Enabled = true;
				item.Members = RemoveItemNameFromMembersList(
						  item.Name
						, item.Members.Clone() as string[]
					);

                // update service item
                mail.UpdateList(item);

                // update meta item
                item.Password = CryptoUtils.Encrypt(item.Password);
                PackageController.UpdatePackageItem(item);
                return 0;
            }
            catch (Exception ex)
            {
                throw TaskManager.WriteError(ex);
            }
            finally
            {
                TaskManager.CompleteTask();
            }
        }