Regarding the PST structure/size limit and Outlook versions, prior to
Outlook 2003, the limit was 2 GB. Outlook 2003 allows you to create PST
files that are compatible with older versions, and hence had the 2 GB limit.
So just because a PST is opened in Outlook 2003 doesn't mean that it
necessarily can support over 2 GB. You have to look at the properties of the
PST from Outlook, as the other replier mentioned.

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Mel K.
MCSA: M
wrote in message
...
I have been reading prior posts regarding the 2 GB limit on PST file for
some versions of Outlook.

Is this unique to certain Outlook versions or does it pertain to the PST
file structure or both?

I am using Outlook 2007 but the PST file may have been created with an
earlier version of Outlook.

How can I tell about the PST file structure or which version created it?