Outlook receive stamp incorrect

One of my users are having an issue with MS Outlook. The received time stamp on all incoming email is an hour behind the current time. This user is the only one experiencing this problem. I have checked the time zones on the exchange server, Windows on the client machine and Outlook on the client machine. All settings are in the correct time zone. I sent her a test email and although her Windows’ time displays correctly her email still displays an hour behind. Thanks in advance for all help.
Rick