Unable to update/remove a mailbox in Plesk: mailmng failed: MEAOPO.Mailbox.GetMailbox failed

Symptoms

• The error message is received when attempting to manage (update the password for or remove) a mailbox using Plesk:
• Refresh Usage Stats fails under Domains >  example.com > Email Addresses and Disk Usage is shown incorrectly
• The affected mailbox is missing under MailEnable > Messaging Manager > Post Offices > example.com
• One of the errors below is observed:
  

  CONFIG_TEXT: Unable to remove the mail names: mailmng failed: MEAOPO.Mailbox.GetMailbox failed
  MEAOPO.Mailbox.RemoveMailbox failed
  MEAOAM.AddressMap.RemoveAddressMap failed for domainexample.com [example.com]

  ---

  CONFIG_TEXT: MEAOPO.Mailbox.GetMailbox failed
      at (MailEnable::MailEnableMailName::MailEnableMailName line 92)
      at execute console command --set-password(vconsoleapp::start line 128)
      at execute "C:\\\\Program Files\\\\SWsoft\\\\Plesk\\\\admin\\\\bin\\\\mailmng.exe"
  --set-password "--domain-name=example.com" "--mailname=jdoe"
  --password=stereotype"(vconsoleapp::run line 138) Execute file name: C:\\\\Program Files\\\\Plesk\\\\admin\\\\bin\\\\mailmng.exe

  ---

  CONFIG_TEXT: Internal error: mailmng failed: Loaded Postoffice Configuration Provider (MEAIPO.DLL) MEAOPO.Mailbox.GetMailbox failed
  Message mailmng failed: Loaded Postoffice Configuration Provider (MEAIPO.DLL) MEAOPO.Mailbox.GetMailbox failed

  ---

  CONFIG_TEXT: Unable to delete some of the selected e-mail addresses

  ---

  CONFIG_TEXT: Internal error:
  mailmng failed: MEAOPO.Mailbox.GetMailbox failed at (MailEnable::MailEnableMailName::MailEnableMailName line 95) at execute console command --get-mailbox-size(vconsoleapp::start line 122) at execute "E:\Program Files (x86)\Parallels\Plesk\admin\bin\mailmng" --get-mailbox-size "--domain-name=example.com" "--mailname=jdoe"(vconsoleapp::run line 139) (Error code 1)

Cause

MailEnable misconfiguration

Resolution

Note: if direct RDP access to the server is not possible, contact server administrator for further assistance.

1. Connect to the server via RDP.

2. Open Command Prompt as Administrator:
3. Run the following command:

   C:\> plesk repair mail example.com