This is a guide, Not a step by step walkthrough! What are you an end user or an admin? FFS!
First create a new outlook data file in outlook – give appropriate name (eg. Archive 2008)
Navigate to the IMAP store in Outlook select all the msgs you would like to “Move” to the archive Eg. Hold shift and click top msg and bottom msg
Right click select Move to Folder etc, Select destination folder. Click OK
Depending on how well outlook is behaved the msgs wont move – in fact they will still be there, but they probably copied to the Archive 2008 data file (Quick go check) Now that you have the msgs copied, you can try delete them, go on try, it doesn’t work does it….no.
–Close Outlook –
On the server navigate to C:\MDaemon\Users\<DOMAIN>\<USERNAME>
delete all the messages that you backed up (Organised by date helps
)
–Open Outlook –
Get Outlook/IMAP to update the ‘Cached Headers’ Completely (Usually does this automatically after opening outlook?)
Right Click IMAP store in Outlook
Properties – Advanced – Compress Now – Waiting a long time (hours if we are talking gigabytes)