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Before we had our own Exchange servers, we were hosted on another provider...then they had a major information store issue and could not recreate our exchange mailboxes. So, what did we do? - we contacted PAYAM - a specialist Australian company - not only did they recover the information in .PST form (by re-creating data from .OST files); they did it in 24hours! We cannot recommend this company and their professionalism highly enough - click here to visit PAYAM's website