Zimbra Mailbox usage report

Простой скрипт для получения отчета (в виде простого текста) об объеме почты каждого пользователя Zimbra.
Взято отсюда: https://wiki.zimbra.com/wiki/Mailbox_usage_report
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A way to get an emailable report of all mailboxes in a domain, their quota, usage and account status, so a domain admin can review their accounts without having to login to zimbra. (most of this is the same as viewing quota usage in zimbra admin, but this was easier, as it can then be emailed on a schedule)