Email security issues

lately some strange things are happening in the organization. For instance one of the directors complained that he lost his emails for about a month. I mean according to him the emails were there in his Inbox till friday eve but monday morning those mails were not there :S

Now yesterday another director has complained that his emails are being read by somebody. Emails that he hasnt reas are marked as read in his Inbox. When I checked the server log, no other user has accessed his emails.

Now I am confused as to how to go about resolving these issues?

any help or bright ideas?

Subject: RE: Email security issues

unread marks are person based, so someone else reading the mail would not influence your unread marks. It is possible that someone is using his ID file to read the mail. I would look at mail rules, log results from the fixup task, press shift+F9 in the inbox to rebuild the index, and training for the directors. Not neccessarily in that order.