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Exchange 2010 Storage Quota Settings -- Powershell question
Posted on 2012-12-26
Trying to understand the meaning of the Powershell term 'Unlimited' for users whose storage quota setting is set to Default. "Unlimited" also shows for users whose storage quota is truly set to unlimited and not using the database defaults.
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Active today
Please refer below link to see user mailbox quota limits.
http://help.outlook.com/en-in/140/gg576861.aspx
http://smtpport25.wordpress.com/2009/06/30/powershell-to-get-mailbox-lists-who-is-out-of-default-quota-limits/
http://help.outlook.com/en-in/140/gg576861.aspx
http://smtpport25.wordpress.com/2009/06/30/powershell-to-get-mailbox-lists-who-is-out-of-default-quota-limits/
When you check the Storage Quota of a mailbox in powershell, you need to check two values.. ProhibitSendReceiveQuota and UseDatabaseQuotaDefaults
In following example UseDatabaseQuotaDefaults set to True, so the ProhibitSendReceiveQuota value can be ignored. Limits set on Database will take precedence.
ProhibitSendQuota : unlimited
ProhibitSendReceiveQuota : unlimited
UseDatabaseQuotaDefaults : True
This example UseDatabaseQuotaDefaults set to False, so the ProhibitSendReceiveQuota is valid.
ProhibitSendQuota : unlimited
ProhibitSendReceiveQuota : unlimited
UseDatabaseQuotaDefaults : False
In following example UseDatabaseQuotaDefaults set to True, so the ProhibitSendReceiveQuota value can be ignored. Limits set on Database will take precedence.
ProhibitSendQuota : unlimited
ProhibitSendReceiveQuota : unlimited
UseDatabaseQuotaDefaults : True
This example UseDatabaseQuotaDefaults set to False, so the ProhibitSendReceiveQuota is valid.ProhibitSendQuota : unlimited
ProhibitSendReceiveQuota : unlimited
UseDatabaseQuotaDefaults : False
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Subsun,
What if UseDatabaseQuotaDefaults shows nothing in the value section of get-mailbox cmdlet?
What if UseDatabaseQuotaDefaults shows nothing in the value section of get-mailbox cmdlet?
There is a correction..
I have done some testing by setting the UseDatabaseQuotaDefaults of user mailbox to $null. It appears that, even the GUI and PowerShell shows the mailbox limit is set as Unlimited, the actual limit applied to mailbox is from database. Which means Null is considered as True (If any mailbox is set to UseDatabaseQuotaDefaults as null, then the limits set on Database will take precedence.)
I have done some testing by setting the UseDatabaseQuotaDefaults of user mailbox to $null. It appears that, even the GUI and PowerShell shows the mailbox limit is set as Unlimited, the actual limit applied to mailbox is from database. Which means Null is considered as True (If any mailbox is set to UseDatabaseQuotaDefaults as null, then the limits set on Database will take precedence.)
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This is a very interesting topic. Ransomware has been around for a while but has increased drastically over the last year or so.
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