Mail tab is missing for some subscriptions when SmarterMail is used

Symptoms

• The Mail tab at Domains > example.com is missing for some subscriptions in Plesk

• In an attempt to create a new subscription, the following error is shown:

  Error: mailmng failed: AddDomainEx(example.com) failed: Error code -6. Error message: Failed to create 'example.com'. The maximum number of domains allowed has been reached.

• When creating a mailbox, the following error appears in Plesk:

  Error: Unable to update the mail account properties:mailmng failed: AddUser2(johndoe@example.com) failed: Error code -5. Error message: Failed to add the user 'johndoe@example.com'. The maximum number of users for the server has been reached..

• In SmarterMail web interface SmarterMail > Settings > Activation > Licensing the limit is reached:

  

Cause

SmarterMail license limits have been reached, no license is installed or license is inactive.

Resolution