Exchange 2016: "554 5.2.2 mailbox full" but it's not?

Question

Microsoft Exchange

Greetings Lord.
There was a problem with one mailbox in the organization:
Each sender to this mailbox receives a rejection (under the spoiler), but the letters reach:

spoiler

Не удалось выполнить доставку следующим получателям или группам:

Пользователь1 (адрес@почта.ru)
Почтовый ящик получателя заполнен и в данный момент не может принимать сообщения. Попробуйте снова отправить письмо позже или обратитесь к получателю напрямую.

Организация msk-mx-01.тыры.пыры.ru отклонила сообщение.

Диагностические сведения для администраторов:

Формирующий сервер: msk-mx-01.тыры.пыры.ru


адрес@почта.ru
msk-mx-01.тыры.пыры.ru
Remote Server returned '554 5.2.2 mailbox full; STOREDRV.Deliver.Exception:QuotaExceededException.MapiExceptionShutoffQuotaExceeded; Failed to process message due to a permanent exception with message Cannot get ID from name. 16.55847:070D0000, 17.43559:000000008C000000000000000000000000000000, 20.52176:010F87850200103100000000, 20.50032:010F87857217000000000000, 0.35180:010F8785, 255.23226:5E010000, 255.27962:56000000, 255.17082:B9040000, 0.16993:DD040000, 4.21921:B9040000, 255.31418:DD040000, 0.22753:FA000000, 255.21817:B9040000, 0.37224:00000000, 4.40808:DD040000, 0.24529:642D3436, 4.18385:DD040000, 0.36864:30356462, 4.37120:DD040000 [Stage: CreateMessage]'


Исходные заголовки сообщения:

Received: from msk-mx-01.тыры.пыры.ru (10.97.102.44) by
 msk-mx-01.тыры.пыры.ru (10.97.102.44) with Microsoft SMTP Server
 (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id
 15.1.1415.2; Fri, 29 Nov 2019 13:02:51 +0300
Received: from msk-mx-01.тыры.пыры.ru ([::1]) by msk-mx-01.тыры.пыры.ru
 ([::1]) with mapi id 15.01.1415.002; Fri, 29 Nov 2019 13:02:51 +0300
Content-Type: application/ms-tnef; name="winmail.dat"
Content-Transfer-Encoding: binary
From: Пользователь2 <имя[email protected]домен.ru>
To: Пользователь1 <адрес@почта.ru>
Subject: test
Thread-Topic: test
Thread-Index: AdWmnCQZ285SHClJTmqxf5fp5Nskkw==
Date: Fri, 29 Nov 2019 13:02:50 +0300
Message-ID: <[email protected]домен.ru>
Accept-Language: ru-RU, en-US
Content-Language: ru-RU
X-MS-Has-Attach:
X-MS-TNEF-Correlator: <[email protected]домен.ru>
MIME-Version: 1.0
X-Originating-IP: [10.97.113.150]
Return-Path: пользователь[email protected]домен.ru

The mailbox quota was filled, after archiving messages, more than half was freed, and this place, judging by the ecp console and the exchange management shell, is not occupied. Tell me which way to dig?

Answer 1

See the user's directories through the offline Outlook client. It's not about the beautiful directories of the first tab. It's about the tab next to Task and the calendar. There are sync errors.