HI all, So, i have a little interesting feature wich will ocupy me in next days. I have to migrate sendmail server with 1800 mailboxes, with averige 3000 mail flow a day to Exchange 2003 server. Major point is that the downtime must be 0 seconds. I saw some advices on net but I`m not shure that it works. Anyone with expirience, or some advice. Beer on me!(if eweryyhing works) Cheers