If you want to configure file size limit of PST and OST files in MS Outlook 2003, then this article would be helpful a lot. Microsoft Office Outlook 2003 supports both ANSI and UNICODE personal folders .PST and offline folder .OST files. Using the below mentioned registry entries will help in limiting the size of both PST and OST files.
Location for these registry entries is located in following path in Registry Editor:
Continuing with configuration of file size limit, it should be noted that serious problems tend to occur if you modify the registry incorrectly. Follow these steps to configure the size limit for both the .pst and the .ost files
This way user can configure the file size limit of PST as well as OST file in Outlook 2003.
Whenever MaxFileSize registry entry value exceeds the ANSI 2 gigabyte (GB) limit on either the PST or OST files, the value is ignored to limit the size to 2 GB to prevent corruption. The default value for the WarnFileSizeregistry registry entry is calculated to be 95% of the MaxFileSize registry entry for a UNICODE file. It is to be noted that when WarnFileSize or WarnLargeFileSize limit is reached, e-mail messages cannot be sent, and items cannot be copied or moved within the file.
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