Article ID: 125437, created on May 5, 2015, last review on Jun 11, 2016

  • Applies to:
  • Plesk 11.5 for Linux
  • Plesk 11.5 for Windows


When trying to limit mail boxes for some users the following error appears:

The mailbox size cannot exceed the default size
The specified limit is invalid.


Affected subscription is not switched to the new business model.


Complete the switching subscriptions to the new business model as it described in KB #118262

Search Words

mailbox quota unable to change in plesk panel

The specified limit is invalid

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customer mail quota edit

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