Microsoft Outlook categorizes Outlook Data Files into two types: PST and OST files. PST files contain data stored in your personal folders, whereas OST files contain data downloaded off your Exchange ...

This post features solutions to fix this data file is associated with a mail account OST file error on Outlook. This error can occur when a user fails to delete an ...

However, at other sites, I'm sure I have users who have greatly exceeded 2GB on their OST files. Checking via RDP into those Exchange 2003 servers, I see users with 3.x GB mailboxes. Is this an issue ...