Please help me how to import users accounts and their emails from my old Fedora box which is running dovecot/postfix/openwebmail ?

Please help me out there.use what stuff is used to migrate my usersName with Password & accounts ..
Guide to imapsync - Zimbra :: Wiki

User Migration - Zimbra :: Wiki


User Migration From Dovecot With External LDAP - Zimbra :: Wiki

IMAP Tools

Give my straight path which will do all in 2-5 steps.

thanks and waiting.