Indexing PST files in SharePoint (MOSS) 2007
SharePoint 2007 does not provide an IFilter for indexing PST files. These files contain email messages and PST files can be generated from Microsoft Exchange using EXMerge.exe or by exporting from Microsoft Outlook.
Here is one technique for indexing the contents of a PST. First, you need to extract messages from the PST into separate MSG files. A tool like Aid4Mail (www.fookes.com) will do this for you. You can then create a content type for indexing the folder in which the MSG files are located.