To display the current quota settings for the mailbox, run: Get-Mailbox -Identity jsmith | fl IssueWarningQuota,ProhibitSendQuota,ProhibitSendReceiveQuota,UseDatabaseQuotaDafaults To change quota setting for the user jsmith use the following command: Set-Mailbox -Identity jsmith -IssueWarningQuota 15GB -ProhibitSendQuota 18GB -ProhibitSendReceiveQuota 20GB -UseDatabaseQuotaDafaults $false But the standard quota values are not suitable for everyone, so the Exchange administrator periodically has to change the quota settings for the individual users. To do this, go to the section Servers > Databases > select the required database > Properties > set the necessary quotas on the Limits tab.ĭatabase restrictions apply to all mailboxes that are in this database. You can also configure mailbox quotas from the Exchange admin center (EAC) web interface. To change database quotas, you can run the following command: Set-MailboxDatabase -Identity lonDB1 -IssueWarningQuota 1.8GB -ProhibitSendQuota 2GB -ProhibitSendReceiveQuota 2.3GB Messages sent to this mailbox will be returned to the sender with an appropriate error message (NDR).īy default, quotas for a new mailbox database are not set. ProhibitSendReceiveQuota-if this value is exceeded, the user won’t be allowed to send new emails, and no more messages will be delivered to this mailbox.ProhibitSendQuota-if the mailbox size reaches the specified value or exceeds it, the mailbox user on the Exchange server won’t be allowed to send new emails, and an error message will be displayed.IssueWarningQuota-if the mailbox size is equal to or greater than the specified value, a warning is sent to the user of this mailbox.As you can see, the mailbox has three levels of size restrictions:
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