O Outlook não reconhece UTF-8 quando o endereço IP está presente no conteúdo do email

O Outlook não reconhece UTF-8 quando o endereço IP está presente no conteúdo do email

Estou enviando um email usando Zend Framework 2, usando layout com tag devidamente <META content="text/html; charset=UTF-8" http-equiv=Content-Type>configurada <head>.
Quando coloco um link contendo o endereço IP no conteúdo do e-mail, o Outlook (versão 365) para de reconhecer o conjunto de caracteres corretamente e exibe o e-mail na codificação da Europa Ocidental (Windows).
Claro, se eu alterar a codificação em Ações -> Outras Ações -> Codificação para UTF-8, ela será exibida corretamente.
Você sabe como forçar o Outlook a exibir o e-mail em UTF-8?

Quando altero o link para não conter endereço IP, o Outlook reconhece a codificação UTF-8 corretamente, o único problema é quando o link contém endereço IP.
Verifiquei que há um problema apenas com $this->serverurl()o método, mas como o endereço IP está codificado, o efeito é o mesmo: sem reconhecimento UTF-8.

Conteúdo do email (sem layout):

<?php 
echo sprintf(
    $this->translate('scp.notification.done'),
    '<a href="'.$this->serverurl() . $this->url('system-change-proposal/view', array('id' => $this->id)) . '">' . $this->info['PROPOSAL_NUMBER'] . '</a><br/>',
    $this->info['CREATE_DATE'] . '<br/>',
    $this->info['TOPIC'] . '<br/>',
    $this->info['CONTENT']
); 
?>

O e-mail é exibido assim (linguagem polonesa com caracteres diacríticos poloneses quebrados):

UWAGA. Wiadomość pochodzi z serwera DEWELOPERSKIEGO ZPB – prosimy jÄ… zignorować! DzieÅ„ dobry, zrealizowaliÅ›my Twój wniosek o zmiany w ZPB o nr 2019/2 z dnia 2019-08-13 12:43:32 TytuÅ‚: test Treść: testujemy różne rzeczy Jeżeli masz pytania . realizacji wniosku proszÄ™ ou contato com Help Desk nr tel xxx xxx xxx

HTML completo do e-mail:

<!doctype html>
<html>
  <head>
    <meta name="viewport" content="width=device-width" />
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <title>Simple Transactional Email</title>
    <style>
      /* -------------------------------------
          GLOBAL RESETS
      ------------------------------------- */
      img {
        border: none;
        -ms-interpolation-mode: bicubic;
        max-width: 100%; }

      body {
        background-color: #f6f6f6;
        font-family: sans-serif;
        -webkit-font-smoothing: antialiased;
        font-size: 14px;
        line-height: 1.4;
        margin: 0;
        padding: 0;
        -ms-text-size-adjust: 100%;
        -webkit-text-size-adjust: 100%; }

      table {
        border-collapse: separate;
        mso-table-lspace: 0pt;
        mso-table-rspace: 0pt;
        width: 100%; }
        table td {
          font-family: sans-serif;
          font-size: 14px;
          vertical-align: top; }

      /* -------------------------------------
          BODY & CONTAINER
      ------------------------------------- */

      .body {
        background-color: #f6f6f6;
        width: 100%; }

      /* Set a max-width, and make it display as block so it will automatically stretch to that width, but will also shrink down on a phone or something */
      .container {
        display: block;
        Margin: 0 auto !important;
        /* makes it centered */
        max-width: 800px;
        padding: 10px;
        width: 800px; }

      /* This should also be a block element, so that it will fill 100% of the .container */
      .content {
        box-sizing: border-box;
        display: block;
        Margin: 0 auto;
        max-width: 800px;
        padding: 10px; }

      /* -------------------------------------
          HEADER, FOOTER, MAIN
      ------------------------------------- */
      .main {
        background: #fff;
        border-radius: 3px;
        width: 100%; }

      .wrapper {
        box-sizing: border-box;
        padding: 20px; }

      .footer {
        clear: both;
        padding-top: 10px;
        text-align: center;
        width: 100%; }
        .footer td,
        .footer p,
        .footer span,
        .footer a {
          color: #999999;
          font-size: 12px;
          text-align: center; }

      /* -------------------------------------
          TYPOGRAPHY
      ------------------------------------- */
      h1,
      h2,
      h3,
      h4 {
        color: #000000;
        font-family: sans-serif;
        font-weight: 400;
        line-height: 1.4;
        margin: 0;
        Margin-bottom: 30px; }

      h1 {
        font-size: 35px;
        font-weight: 300;
        text-align: center;
        text-transform: capitalize; }

      p,
      ul,
      ol {
        font-family: sans-serif;
        font-size: 14px;
        font-weight: normal;
        margin: 0;
        Margin-bottom: 15px; }
        p li,
        ul li,
        ol li {
          list-style-position: inside;
          margin-left: 5px; }

      a {
        color: #3498db;
        text-decoration: underline; }

        .text-left {
          text-align: left;
        }
        .text-right {
          text-align: right;
        }
        .text-center {
          text-align: center;
        }
        .text-justify {
          text-align: justify;
        }
        .text-nowrap {
          white-space: nowrap;
        }

        .table {
          border-spacing: 0;
          border-collapse: collapse;
        }
        td,
        th {
          padding: 0.5em;
        }

        .zpb-table th {
            padding:7px;
            padding-top:4px;
            padding-bottom:4px;
            font-weight:bold;
            text-align:center;
            background-color:#F6F6F6;
            border-right: 1px solid #D2E9EF;
            box-shadow: 0px 2px 5px #888888;
        }

        .zpb-table td {
            vertical-align: middle !important;
        }

      .table-bordered th,
      .table-bordered td {
        border: 1px solid #ddd !important;
      }

        .alert {
          padding: 15px;
          margin-bottom: 20px;
          border: 1px solid transparent;
          border-radius: 4px;
        }

        .alert-warning {
          color: #8a6d3b;
          background-color: #fcf8e3;
          border-color: #faebcc;
        } 

      /* -------------------------------------
          BUTTONS
      ------------------------------------- */
      .btn {
        box-sizing: border-box;
        width: 100%; }
        .btn > tbody > tr > td {
          padding-bottom: 15px; }
        .btn table {
          width: auto; }
        .btn table td {
          background-color: #ffffff;
          border-radius: 5px;
          text-align: center; }
        .btn a {
          background-color: #ffffff;
          border: solid 1px #3498db;
          border-radius: 5px;
          box-sizing: border-box;
          color: #3498db;
          cursor: pointer;
          display: inline-block;
          font-size: 14px;
          font-weight: bold;
          margin: 0;
          padding: 12px 25px;
          text-decoration: none;
           }

      .btn-primary table td {
        background-color: #3498db; }

      .btn-primary a {
        background-color: #3498db;
        border-color: #3498db;
        color: #ffffff; }

      /* -------------------------------------
          OTHER STYLES THAT MIGHT BE USEFUL
      ------------------------------------- */
      .last {
        margin-bottom: 0; }

      .first {
        margin-top: 0; }

      .align-center {
        text-align: center; }

      .align-right {
        text-align: right; }

      .align-left {
        text-align: left; }

      .clear {
        clear: both; }

      .mt0 {
        margin-top: 0; }

      .mb0 {
        margin-bottom: 0; }

      .preheader {
        color: transparent;
        display: none;
        height: 0;
        max-height: 0;
        max-width: 0;
        opacity: 0;
        overflow: hidden;
        mso-hide: all;
        visibility: hidden;
        width: 0; }

      .powered-by a {
        text-decoration: none; }

      hr {
        border: 0;
        border-bottom: 1px solid #f6f6f6;
        Margin: 20px 0; }

      .table-bordered th,
      .table-bordered td {
        border: 1px solid #ddd !important;
      }

      /* -------------------------------------
          RESPONSIVE AND MOBILE FRIENDLY STYLES
      ------------------------------------- */
      @media only screen and (max-width: 620px) {
        table[class=body] h1 {
          font-size: 28px !important;
          margin-bottom: 10px !important; }
        table[class=body] p,
        table[class=body] ul,
        table[class=body] ol,
        table[class=body] td,
        table[class=body] span,
        table[class=body] a {
          font-size: 16px !important; }
        table[class=body] .wrapper,
        table[class=body] .article {
          padding: 10px !important; }
        table[class=body] .content {
          padding: 0 !important; }
        table[class=body] .container {
          padding: 0 !important;
          width: 100% !important; }
        table[class=body] .main {
          border-left-width: 0 !important;
          border-radius: 0 !important;
          border-right-width: 0 !important; }
        table[class=body] .btn table {
          width: 100% !important; }
        table[class=body] .btn a {
          width: 100% !important; }
        table[class=body] .img-responsive {
          height: auto !important;
          max-width: 100% !important;
          width: auto !important; }}

      /* -------------------------------------
          PRESERVE THESE STYLES IN THE HEAD
      ------------------------------------- */
      @media all {
        .ExternalClass {
          width: 100%; }
        .ExternalClass,
        .ExternalClass p,
        .ExternalClass span,
        .ExternalClass font,
        .ExternalClass td,
        .ExternalClass div {
          line-height: 100%; }
        .apple-link a {
          color: inherit !important;
          font-family: inherit !important;
          font-size: inherit !important;
          font-weight: inherit !important;
          line-height: inherit !important;
          text-decoration: none !important; }
        .btn-primary table td:hover {
          background-color: #34495e !important; }
        .btn-primary a:hover {
          background-color: #34495e !important;
          border-color: #34495e !important; } }

    </style>
    </head>
    <body class="">
        <table border="0" cellpadding="0" cellspacing="0" class="body">
            <tr>
                <td>&nbsp;</td>
                <td class="container">
                    <div class="content">
                        <table class="main">
                            <tr>
                                <td>
                                    <span style="color: #ee0000; font-size: 17px;">
                                        UWAGA. Wiadomość pochodzi z serwera DEWELOPERSKIEGO ZPB – prosimy ją zignorować!                                    </span>
                                </td>
                            </tr>
                            <tr>
                                <td class="wrapper">Dzień dobry, zrealizowaliśmy Twój wniosek o zmiany w ZPB o nr <a href="http://zpb//scp/view/5613">2019/2</a><br/> z dnia 2019-08-13 12:43:32<br/> Tytuł: test<br/> Ttreść: testujemy różne rzeczy Jeżeli masz pytania dot. realizacji wniosku proszę o kontakt z Help Desk nr tel xxx xxx xxx<br/>
</td>
                            </tr>
                        </table>
                    </div>
                </td>
                <td>&nbsp;</td>
            </tr>
        </table>
    </body>
</html>

No servidor de produção $this->serverurl()produzirá o endereço normal, mas nos servidores de teste sempre produzirá um endereço IP, o que não deve (mas atualmente o faz) quebrar o reconhecimento da codificação.

Verifiquei e no webmail o problema é o mesmo do Outlook, o GMail por outro lado o exibe corretamente.
Talvez possa ser um problema de configuração do servidor IMAP? Não sei nada sobre essas coisas.

Fiz a mesma pergunta no Stackoverflow, mas depois de considerar, acho que se adapta melhor aqui.

Cabeçalhos completos retirados das propriedades de email do Outlook:

Received: from 195.245.224.194 (HELO mx-1.tauron.pl) (195.245.224.194)
  by 94.152.180.72 with SMTP; 20 Aug 2019 07:27:18 -0000
Received: (qmail 43535 invoked by uid 1272007); 20 Aug 2019 07:27:18 -0000
Received: from poczta.tpe.corp (10.170.11.93) by
 TPCE-EXCA01V-TD-ZPB-new-version.tpe.corp (10.170.6.50) with Microsoft SMTP
 Server id 14.3.408.0; Tue, 20 Aug 2019 09:27:14 +0200
Received: from unknown (HELO poczta.tpe.corp) ([10.170.6.40])
  by mx-1.tauron.pl with ESMTP; 20 Aug 2019 09:27:15 +0200
From: "TD Zarzadzanie Praca Brygad" <[email protected]>
To: <[email protected]>
Subject: Zrealizowano wniosek o zmiany 2019/2
Date: Tue, 20 Aug 2019 09:27:14 +0200
Message-ID: <[email protected]>
MIME-Version: 1.0
Content-Type: multipart/alternative;
    boundary="----=_NextPart_000_0000_01D5573A.4D3DE7C0"
X-Mailer: Microsoft Outlook 16.0
X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on 3010302.s.tld.pl
X-Spam-Flag: YES
X-Spam-Level: *******
X-Spam-Report: =?ISO-8859-1?Q?
    * -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at
    *      https://www.dnswl.org/, no trust
    *      [195.245.224.194 listed in list.dnswl.org]
    * -1.5 BAYES_00 BODY: Bayesowskie prawdopodobie=f1stwo spamu wynosi 0 do
    *       1%
    *      [score: 0.0000]
    * -0.1 SPF_HELO_PASS SPF: HELO matches SPF record
    *  8.1 WEIRD_PORT URI: U=bfywa niestandardowego numeru portu dla HTTP
    *  0.7 MIME_HTML_ONLY BODY: Wiadomo=b6=e6 posiada tylko cz=ea=b6ci
    *      tekstowe/html MIME
    *  0.0 HTML_MESSAGE BODY: Wiadomo=b6=e6 zawiera kod HTML?=
X-Spam-Relay-Country: PL ** **
X-IronPort-AV: E=Sophos;i="5.64,408,1559512800"; 
   d="scan'208,217";a="76099017"
X-IronPort-AV: E=McAfee;i="6000,8403,9354"; a="76099017"
X-C2ProcessedOrg: 5199a320-9f4c-49ed-bc0e-d8ad42683a42
X-Spam-Status: Yes, score=7.2 required=5.0 tests=BAYES_00,HTML_MESSAGE, MIME_HTML_ONLY,RCVD_IN_DNSWL_NONE,SPF_HELO_PASS,WEIRD_PORT autolearn=disabled version=3.4.2
X-EsetId: 37303A29D5F1F66E61726A
Thread-Index: AQKbkkKOZgQGewYhh0xjSjHTj+sQ2w==

Informações adicionais vistas na exibição da "mensagem original" do GMail:

MIME-Version: 1.0
Content-Type: text/html
Content-Transfer-Encoding: 8bit
From: "TD Zarządzanie Pracą Brygad" <[email protected]>
To: <[email protected]>
Subject: Zrealizowano wniosek o zmiany 2019/2

Não há nada sobre codificação aqui, o charset é definido apenas na <head>mensagem.

informação relacionada