

I have tried importing the tar.gz though Zimbra Desktop client - but same result as the online - running for hours. I Have covertet the PST to tar.gz with Bitrecover PST Converter - ends with a tar.gx - but when importing it through the Webinterface ( it'll start but after several hours theres not any subfolders in the importet folder.

I have tried the following tools - Zimbra Migration tool -> Says no office is installed - eventhough there's office2016 on the PC I having a user that the last couple of years have been running as POP3 - ends in a PST file on 12,5GB which I like to import into the Zimbra Server - so he's moving from Pop3 to Exchange connection towards the server.
