Download of Exchange Server Repair Kit 2.1.5 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. We recommend checking the downloaded files with any free antivirus. The Exchange Server Repair Kit installer is commonly called ExchangeServerRepairKitLau.exe. The most popular version of the program 2.1. The software belongs to System Utilities. This program was originally produced by Repair Kit, Inc.
From the developer:
Recovered data can be extracted to a healthy Outlook PST file ready for being imported into Outlook or a set of files of corresponding formats on the user's hard drive. Designed and created as a Microsoft Exchange database repair tool intended for a wide audience, the program boasts a simple, clean and extremely user-friendly UI suitable for people of various technical and non-technical backgrounds.
You may want to check out more software, such as Jungle Disk, FT-60 Backup Utility BETA or ABC Backup Pro, which might be similar to Exchange Server Repair Kit.