after i moved all accounts from one server to another a big problem appear.

mailpermissions. after I add a new client on the server, others have a mail perm problem.

May 19 14:41:23 sg2 cpanelpop[26641]: Password failure for user=francesca homedir=/home/xxx passwd=/home/olduser/etc/domain.com/shadow
May 19 14:41:23 sg2 cpanelpop[26641]: User not found user=francesca homedir=/home/newuser passwd=/home/newuser/etc/shadow

/scripts/fixeverything, /scripts/mailperm or /scripts/commonproblems doesn't solve it. help?