Symptoms
- Unable to change mailbox size in Plesk GUI going to Domains > example.com > Email Addresses > Click on the mailbox > Another size. The following error is shown in Plesk GUI:
The specified limit is invalid.
Cause
The custom mailbox size trying to be set on the mailbox is limited by the Subscription, Service Plan and/or Reseller's Service Plan settings:
In Subscriptions: Subscriptions > example.com > Customize > Mailbox size
In Service Plan: Service plans > Service_plan_name > Mailbox size
In Resellers: Resellers > John Doe > Customize > Mailbox size
Resolution
Note: If Plesk Web Admin edition is installed, apply the solution described here
Change the default mailbox size limit for Subscription or for Service Plan or for Reseller. This depends on where the limit is configured in each specific case. There are 3 options:
Change limit in a Subscription:
Go to Subscriptions > example.com > Click on Customize option available in the Account right sidebar section > Change Mailbox size > Click on Update & Lock to apply the changes
Change limit in a Service Plan:
Go to Service Plans > Choose required Service Plan > Change Mailbox size > Click OK to apply the changes
Change limit in a Reseller:
Go to Resellers > Click on the name of the Reseller > Click on Customize option available in the Resources right sidebar section > Change Mailbox size > Click on Update & Lock to apply the changes
Additional information
Unable to change maibox size: The specified limit is invalid
