почтовая ошибка приложений Google

В последние месяцы у нас есть большие проблемы, когда мы пошлем электронное письмо в нашем собственном списке рассылки (для безопасности, я назову наше доменное имя example.com), staff@toto.com. Все пользователи получают этот вид почты назад от системного администратора:

> Delivery to the recipient failed Permanently Following:
> 
>       staff@example.com
>
> Technical details of permanent failure:
Message Rejected by Google Groups. Please visit http://mail.google.com/support/bin/answer.py?hl=en&answer=188131 to review our Bulk Email Senders Guidelines.
> 
> ----- Original Message -----
>
X-Received: by 10.182.209.72 with SMTP id mk8mr23683979obc.54.1421834216950;
         Wed, January 21, 2015 1:56:56 -0800 (PST)
Return-Path: <jsmith@toto.com>
Received: from mail-ob0-f173.google.com (mail-ob0-f173.google.com [209.85.214.173].)
         by mx.google.com with ESMTPS id h3si3112004oig.54.2015.01.21.01.56.56
         for <staff@example.com>
         (version = TLSv1 cipher = ECDHE-RSA-RC4-SHA bits = 128/128);
         Wed, January 21, 2015 1:56:56 -0800 (PST)
Received-SPF: PermError (google.com: Permanent error in processing Pendant lookup of jsmithe@example.com) client-ip = 209.58.200.173;
Authentication-Results: mx.google.com;
        spf = PermError (google.com: Permanent error in processing Pendant lookup of jsmith@example.com) smtp.mail=jsmith@toto.com
Received: by mail-ob0-f173.google.com with SMTP id vb8so12790790obc.4
         for <staff@example.com>; Wed, January 21, 2015 1:56:56 -0800 (PST)
X-Google-DKIM-Signature: v = 1; a = rsa-sha256; c = relaxed / relaxed;
         d = 1e100.net; s = 20130820;
         h = x-gm-message-state: mime-version of: in-reply-to: references: Date
          : message-id: subject: from: to: content-type;
         bh = = KP283RnI0isYgZDDhR9pZFkzHEcETg2cGGSEoN0vi4E;
         b = Asw92DbuXrZbg3jYD S5WfkZCuiGa6r85Jlcrce + + + CXLHUWmmxhU94AOK xE6F1wMfV
          7TjJWgW8t171EsFhAc1Vx8kiNPmXkRoFTWWbDE5MD6yc3iSZF + c3sMsm5cnHf8xBl7On
          YXSAed qgnAfYnM2OQ0WbcN0kuexZ80LeEXDkyrXMADUkPbOpvr + + + Za95xbOdD ByGaZH
          USbeP2eBLvDxuefWqQYwtZhiLlo08cD + + RtehgfdmYYUtmOO ou000scGN6oAQjO7J2
          Q7Etyb0tLPq9HETpMpfg9tEz / QjFLKHDYEMDodnfotmOODNI // g4kUxGbheuYc9
          d6vg ==
X-Gm-Message-State: ALoCoQnBXf01Iofz9y n6pTm3eK3QplrQ1lNYB8WAHU8aQoeYF9qAbN + / + Kt + MMm iMV6BgcginBXD
MIME-Version: 1.0
X-Received: by 10.202.220.85 with SMTP id t82mr13231601oig.43.1421834216408;
  Wed, January 21, 2015 1:56:56 -0800 (PST)
Received: by 10,202,188,134 with HTTP; Wed, January 21, 2015 1:56:56 -0800 (PST)
In-Reply-To: <be017600.sgv.twR.R.dUjtTs@mailjet.com>
References: <be017600.sgv.twR.R.dUjtTs@mailjet.com>
Date: Wed, 21 January 2015 10:56:56 +0100
Message-ID: <CAHumK5eAJ0meaJq7BYek56UgMCobtrPVEy67P0eFQxBXCpVnbw@mail.gmail.com>
Subject: = UTF-8 RndkOiBFLlQuIFFVT1RJRElFTiBOwrAyNDAx B =????
From: John Smith <jsmith@example.com>
To: Staff <staff@toto.com> emmanuelle dorot <Mikael.White@gmail.com>
         Gerrard Atos <geatos@gmail.com> =? UTF-8? B? SmVhbi1MdWMgT3JtacOocmVz? = <Iadjourni@gmail.com>
         =? UTF-8? Q? Fran = C3 = A7ois_rpartinsson? = <Rpartinsson@example.com>
Content-Type: multipart / alternative; boundary = 001a113d59226615be050d269362

> Enjoy! "

Вы знаете, как мне можно заплатить мою проблему?

Мой доменный хост советовал мне управлять им через консоль бизнеса приложений Google, но я не знаю вообще, что сделать.