We changing our internal infrastructure and replacing old Linux server with an OS X Lion server. One crucial thing is email - need migrate it without interruption. Currently we have Linux/Cyrrus, with zilion of stored emails for tens of local users.
Here: How setup Mail.app IMAP to migrate Mail Server is recommennded doing it via local mail client, what is ok for external imap-server for one user, but not practical for the full server-migrate.
What is the recommended way migrate the whole mail-handling from Linux cyrrus/postfix into OS X Lion dovecot? Know anyone some scripts (preferable perl) what can help with the migrating?
My current idea:
- setup DNS, Users, and email handling on the Lion server
- stop the mailserver on the Linux
- migrate all emails (with some script)
- change MX record from Linux to Lion
- start using Lion
Any guides, caveats and/or any helpful comments?