что это за ошибка

Delivery has failed to these recipients or groups:

moyapochta@yandex.ru
The server has tried to deliver this message, without success, and has stopped trying. The recipient mail server may be temporarily offline or temporarily unable to accept messages. If the problem continues, contact your email admin.

The following organization rejected your message: mx.yandex.ru.






Diagnostic information for administrators:

Generating server: jax4mhfb01.myregisteredsite.com

moyapochta@yandex.ru
mx.yandex.ru
Remote Server returned '554 4.4.7 <mx.yandex.ru #4.4.7>'

Original message headers:

Return-Path: <mysupport@snapnames.com>
Received: from atl4mhco02.registeredsite.com (atl4mhco02.myregisteredsite.com [209.17.115.104])
        by jax4mhfb01.myregisteredsite.com (8.14.4/8.14.4) with ESMTP id 17DGiGwh031040
        for <moyapochta@yandex.ru>; Fri, 13 Aug 2021 12:44:18 -0400
Received: from atl4tixapp03 ([209.17.114.45])
        by atl4mhco02.registeredsite.com (8.14.4/8.14.4) with ESMTP id 17DGfRtR028078
        for <moyapochta@yandex.ru>; Fri, 13 Aug 2021 12:43:28 -0400
Message-ID: <202108131643.17DGfRtR028078@atl4mhco02.registeredsite.com>
MIME-Version: 1.0
From: My Support - SnapNames <mysupport@snapnames.com>
To: Moe Imya <moyapochta@yandex.ru>
Date: Fri, 13 Aug 2021 12:43:28 -0400
Subject: RE: moydomen.com [tkt:22695836]
Content-Type: text/html; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable

You Aug 13, 2021, 04:51 PM

Delivery is delayed to these recipients or groups:

moyapochta@yandex.ru

Subject: RE: moydomen.com [tkt:22695836]

This message hasn't been delivered yet. Delivery will continue to be attempted.






Diagnostic information for administrators:

Generating server: jax4mhfb01.myregisteredsite.com

moyapochta@yandex.ru
mx.yandex.ru
Remote Server returned '554 5.4.0 <mx.yandex.ru #4.4.1>'

Original message headers:

Return-Path: <mysupport@snapnames.com>
Received: from atl4mhco02.registeredsite.com (atl4mhco02.myregisteredsite.com [209.17.115.104])
        by jax4mhfb01.myregisteredsite.com (8.14.4/8.14.4) with ESMTP id 17DGiGwh031040
        for <moyapochta@yandex.ru>; Fri, 13 Aug 2021 12:44:18 -0400
Received: from atl4tixapp03 ([209.17.114.45])
        by atl4mhco02.registeredsite.com (8.14.4/8.14.4) with ESMTP id 17DGfRtR028078
        for <moyapochta@yandex.ru>; Fri, 13 Aug 2021 12:43:28 -0400
Message-ID: <202108131643.17DGfRtR028078@atl4mhco02.registeredsite.com>
MIME-Version: 1.0
From: My Support - SnapNames <mysupport@snapnames.com>
To: Moe Imya <moyapochta@yandex.ru>
Date: Fri, 13 Aug 2021 12:43:28 -0400
Subject: RE: moydomen.com [tkt:22695836]
Content-Type: text/html; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable