I started using Outlook.com 16 April 2013 and have only just realised that some emails older than ~ 60 days are being automatically deleted from the various sub-folders that I have created beneath my Inbox & Sent folders!  This is a disaster as I need to refer to these emails.

What seems strange is that some folders contain emails from day 1, whereas others only have 60 days worth.  I have checked that I have no rules which might be causing this... I have none.  I normally use Outlook 2010 to access the account via MAPI, or from my iPhone via Microsoft Hotmail. 

I have tried recovering them using the recover deleted emails feature but nothing came back...  

Is there any way that I can recover these emails (several from my solicitor have some very important attachments)?  

Plus how do I stop this happening in the future...?