My boss is accessing his emails via the MAPI (Exchange) protocol using:
- The mail app on his iPhone 4S
- Mail.app version 5.3 on an iMac running OS X 10.7
For the most part everything works as expected: if he reads a message on his iPhone, the message turns to "read" on his iMac and vice versa. However, sometimes messages appear to automatically mark themselves as read after a time period of approximately one hour. I understand that messages in the Mail.app will turn to "read" the instant they are highlighted or clicked on, but that is not the situation I'm describing here. I can't find any settings in either application that would automatically mark a message as read after a certain time period.
Any suggestions would be greatly appreciated!