Unable to set mailbox size more than default size in Plesk: The specified limit is invalid

Symptoms

• Unable to change mailbox size in Plesk via the tab Domains > example.com > Email Addresses > click on mailbox > mark another size. 

• Mailbox size typed in field  Another size is larger than the value defined in the Default size. Default size value can be viewed via Plesk GUI:

  • In Service Plan: Service plans > Service_plan_name > Mailbox size
  • In Subscriptions: Service plans > example.com > Customize > Mailbox size
  • In Resellers: Resellers > John Doe > Customize > Mailbox size

• The following error is shown in Plesk GUI:

  PLESK_ERROR: The specified limit is invalid.

  

Cause

Mailbox size is limited by Subscription / Service Plan / Reseller's Service Plan settings.

Resolution

Note: If access as Plesk administrator is not possible, contact Plesk server administrator to apply this guide.

1. Log in to Plesk GUI

2. Switch Plesk interface to the Service Provider View

3. Change the 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 Plesk UI > Subscriptions > example.com > Account section > click Customize > Mailbox size and increase limit to desired size.

   • Change limit in a Service Plan:

     Go to Plesk UI > Service Plans > choose required Service Plan > change Mailbox size.

   • Change limit in a Reseller:

     Go to Plesk UI > Resellers > the name of the Reseller that owns the subscription, domain or client > Account section > click Customize next to Mailbox size and choose the preferable size.

Additional information

Unable to change maibox size: The specified limit is invalid