I had less luck with this around 12 years ago doing a migration from whatever the UW mailserver is to Office365. Probably an Office/Exchange related issue, but

I had less luck with this around 12 years ago doing a migration from whatever the UW mailserver is to Office365. Probably an Office/Exchange related issue, but it was a big headache. I do remember using it for another succcessful migration, and the author being quite helpful.