Microsoft KB Archive/212756

= PC DB: Non-Delivery Report "Recipient's Inbox Does Not Exist or Is Busy" =

Article ID: 212756

Article Last Modified on 10/30/2006

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APPLIES TO


 * Microsoft Mail for PC Networks 3.0
 * Microsoft Mail for PC Networks 3.2
 * Microsoft Mail for PC Networks 3.2a
 * Microsoft Mail for PC Networks 3.5

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This article was previously published under Q212756



SYMPTOMS
When a user sends mail, the user may receive the following non-delivery report (NDR):

Recipient's Inbox does not exist or is busy



CAUSE
This NDR can occur if two people send mail to the same user at the same time, or if the recipient's .MBG or .KEY files have been cached in an open state. It can also occur if one or more mailbags are missing, corrupted, or locked open. Make sure that the mailbags exist, are not corrupted (check size), and are not locked.



RESOLUTION
To resolve this issue if the sender and recipient are on the same postoffice, make sure that the .KEY and .MBG files for the recipient's mailbag are not locked open. If the mailbag is missing or corrupted, recreate the mailbag. For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

104279 PC DB: Creating or Resetting a .KEY and .MBG Pair

If the mailbag is locked, remove the lock from the server.

To resolve this issue if the sender and recipient are on different postoffices (postoffice A and postoffice B, respectively) and the NDR is returned immediately, check the outbound mailbag for postoffice B on postoffice A. If the NDR is returned after a few minutes, check recipient's mailbag on postoffice B. If the mailbag is missing or corrupted, recreate the mailbag. For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

104279 PC DB: Creating or Resetting a .KEY and .MBG Pair

If the mailbag is locked, remove the lock from the server.



WORKAROUND
If this behavior occurs infrequently, it should not be a problem. To work around this issue, check LISTUSER.EXE (click on the link below) to determine what hexadecimal numbered .MBG and .KEY files belong to whom. With this information, you can find out who or what is locking the recipient's .MBG or .KEY files.

Listuser.exe

Keywords: kbprb KB212756

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