Microsoft KB Archive/119088

= PC DOS: 4096 Is Maximum Number of Inbox Entries =

Article ID: 119088

Article Last Modified on 10/30/2006

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APPLIES TO


 * Microsoft Mail for PC Networks 3.0, when used with:
 * Microsoft MS-DOS 6.22 Standard Edition
 * Microsoft Mail for PC Networks 3.0b, when used with:
 * Microsoft MS-DOS 6.22 Standard Edition

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This article was previously published under Q119088



SUMMARY
The maximum number of Inbox entries in the MS-DOS client and the Macintosh client of Microsoft Mail for PC Networks is 4096.

This limitation is due to the size of the delete bit map in the .KEY file. The .MBG file contains deleted and active mail headers. The delete flag is not maintained in the .MBG file but in the matching .KEY file. Each .KEY file contains a 512-byte bitmap of deleted headers in the corresponding .MBG file. Thus, the maximum number of messages that can be stored in the Inbox is:

512*8=4096

The Windows client and the Presentation Manager client have a limit of 5400 messages in the Inbox folder.

Additional query words: 3.00 3.00b 3.20

Keywords: KB119088

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