We have a user who's mailbox .ost file is 23GB. We recently tried to create an archive on an external drive (they have an older computer with small hard drive). The process took several hours and, once completed there was an 8GB file on the external labelled as 'archive.pst' which was 8gb. Now the issue we have is that the original 23gb mailbox file is still the same size even though it now only displays 30,000 of the original 90,000 messages.
I have a few questions:
1) How can we reduce the size of the primary mailbox folder?
2) Is there any reason why the archive file would only be 8GB even though it contains rougly 2/3 of the content of the original mailbox?