[zimbra@zimbra zmigrate]$ for i in `cat /backups/zmigrate/domains.txt `; do zmprov cd $i zimbraAuthMech zimbra ;echo $i ;performed Based upon whether you've got configured Secondary Storage as inside or external, you'll have to determine the technique to migrate the people 3nd migration go, delta move: 24 several hours soon after cutover https://www.hostscheap.com/zimbra-migration-service