If the quota for this parameter is reached, then no emails can be deleted and the following error will be shown: RecoverableItemsQuota: determines how much content can be stored within the Recoverable Items folder of a public folder mailbox.Because public folder mailboxes architecturally are normal Exchange mailboxes then these values can come into play as they will limit how large or for how long content related to public folder mailboxes can grow or will be kept. Mailbox database level quotas apply to public folder mailboxes and not to public folders themselves. The details of other additional parameters can be found here Mailbox database level quota and public folder mailboxes (on-premises only) If any public folder in your organization is greater than 2 GB, we recommend either deleting content from that folder or splitting it up into multiple public folders. Though the values can be modified using Set-OrganizationConfig before the start of the migration, we do not encourage this practice as our recommendation and official guidance suggest migrating the public folders below 2 GB. If there are any public folders which are exceeding those values, the public folder migration to Exchange online will encounter problems as the mailbox size will be exceeded and the migration will fail.
If user tries to email the folder which exceeded the DefaultPublicFolderProhibitPostQuota limit, they will get the “554 5.2.2 mailbox full” non-delivery report. The below error will be shown if someone tried to post content to the public folder exceeding the DefaultPublicFolderProhibitPostQuota value. What happens when DefaultPublicFolderProhibitPostQuota is reached in Exchange Online? In Exchange Online the default values for DefaultPublicFolderIssueWarningQuota will be 1.7 GB and DefaultPublicFolderProhibitPostQuota is set at 2 GB. Organizational Quotas in Exchange online are not unlimited and have predefined values. The default value of this attribute on-premises is unlimited. Users can't post to a folder whose size is larger than the DefaultPublicFolderProhibitPostQuota parameter value. Those quota settings can be seen by running the command Get-OrganizationConfig | fl *defaultpublic*ĭefaultPublicFolderProhibitPostQuota parameter specifies the size of a public folder at which users are notified that the public folder is full. Here is an illustration of types of quotas impacting public folders available for Microsoft Exchange 2013 / 2016 and Exchange Online Planning and setting quotas has always been important for Exchange administrators and is equally important when it comes to deployment of public folders. Let’s get to it! Public folder mailboxes and quotas In this blog post, we are going to discuss public folder quotas.
#EXCHANGE PUBLIC FOLDER MAILBOX SERIES#
As a part of our ‘demystifying modern public folders’ series we have so far discussed the modern public folder deployment best practices and available logging for monitoring public folder connections.
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