The query is as per the thread title...but let me give some background first.

Situation involves a sub contractor working with a multi-national corporation. He was working very closely with them - in so far as he had a user account on the company's internal email system. Without going into detail, a dispute arose. Outlook access was subsequently withdrawn. However, the individual can still view legacy mails up to that time - on the copy of outlook that's on their laptop.

Upon reviewing mails, this individual has now noticed a handful of critical mails that they are 110% sure they had not received during the time in which they were working in close cooperation - onsite - with this company. However, the mails show up with dates suggesting that they were sent during the individuals time - working closely with the company.

Is it possible - where a company have their own outlook server - that mails could be backdated and then sent out from a couple of the other company employees who are key to the issue at hand? The individual concerned would have logged in on a number of occasions in the weeks following this conflict coming to a head.

Any input from anyone with experience of running an outlook server would be very welcome on the subject.