First of all, I apologise for posting this in what is probably the wrong
forum. I'm completely new to Groupwise and am doing this research on
behalf of someone else.

I'm looking for a way of migrating several thousand IMAP mailboxes from
our existing exim mail system. I know that the users can move the mail
themselves but that is really not a viable solution. Googling and hunting
through the forums has not revealed too much.

I have been pointed to the Async Gateway...

I would appreciate ANY advice, links or suggestions that you can give me.