Exchange 2013 – Set default database for new mailboxes

Automatic Mailbox Distribution – Exchange 2013

Default Exchange Database for New Users

Applies to Exchange 2010 as well

You can manually create mailboxes in specific Exchange Database using Exchange Management Console; but if you require Exchange to automate this and create New Mailboxes on your preferred mailbox; follow below steps

Lets say you have 3 Mailboxes

Run the below command against each mailbox to see the value for IsExcludedFromProvisioning

  • Get-MailboxDatabase -Server <ServerName>| select Name,ServerName,IsExcludedFromProvisioning
  • The databases you want excluded from automatic provisioning of new mailboxes; set the value of IsExcludedProvisioning to false
  • Set-MailboxDatabase "Database Name" -IsExcludedFromProvisioning $false
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