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Mailbox storage limit error when a delegate uses the manager's mailbox to send an email message in an Exchange Server 2010 environment

View products that this article applies to.

Symptoms

Consider the following scenario:
  • In a Microsoft Exchange Server 2010 environment, user A has the Full Access permission and the Send As permission to a mailbox of user B .
  • The storage quota for the mailbox of user B is larger than the default storage quota.
  • User A logs on to user B’s mailbox.
  • After user A lets the mailbox sit idle for some time, user A then tries to send or forward an email message. 

    Note The time is longer than the Reread Logon Quotas Interval value.
In this scenario, user A may receive the following error message unexpectedly:
You've exceeded the storage limit for your mailbox. Delete some items from your mailbox.

Additionally, the following event is logged in the Application log on the Mailbox server:
Note When this issue occurs, the mailbox size of user B is nowhere near its storage quota limit.

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Cause

This issue occurs because when user A is automatically re-logged back on to user B's mailbox, the Exchange server incorrectly obtains quota information of user A's mailbox instead of the quota of user B's mailbox.

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Resolution

To resolve this issue, install the following update rollup:
2803727 Description of Update Rollup 1 for Exchange Server 2010 Service Pack 3

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Workaround

To work around this issue, user A has to log off user B’s mailbox and then log on to user B’s mailbox again.

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Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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More Information

For more information about the Reread Logon Quotas Interval value, go to the following Microsoft website:
Mailbox size limits are not enforced in a reasonable period of time
For more information about how to configure storage quotas for a mailbox, go to the following Microsoft website:
General information about how to configure storage quotas for a mailbox

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Keywords: kbqfe, kbsurveynew, kbfix, kbexpertiseinter, kb

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Article Info
Article ID : 2561346
Revision : 1
Created on : 1/7/2017
Published on : 5/30/2013
Exists online : False
Views : 376