Currently have 100 mailboxes on Outlook 2007 on premise and tried using https://rackspace.selfmigration.com
to migrate to non Outlook cloud, but get login error.
Also tried https://www.bittitan.com/products/migrationwiz/types#mailbox
and have the same issue.
What "on premise to cloud Email Migration" tool do you recommend since Rackspace cannot help me with my issue ?
I am also willing to just download the PST, then somehow upload PST to new IMAP server if possible.
Basically I want everything back on the new IMAP server so it a user's hard drive fails, it is still there.