Retrieve Horde passwords on Plesk Linux Server

  1. Log in Via Shell using Putty

  2. Gain access to mysql prompt

    mysql -uadmin -p`cat /etc/psa/.psa.shadow`

  3. Select psa database

    use psa;

  4. Display Email Users and Passwords

    select mail.mail_name, accounts.password from mail, accounts where mail.account_id = accounts.id;

You now have a list of all email users and their corresponding passwords.