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Check MX: Check MX and SPF Records.
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Like example.com."> <label class="mdl-textfield__label" for="mxdomain"> example.com </label> </div> <input id="submit-button" type="submit" value="Run checks!" class="mdl-button mdl-button--colored mdl-js-button mdl-js-ripple-effect" aria-label="Submit"/><br/> <div class="mdl-textfield mdl-js-textfield mdl-textfield--floating-label"> <input name="dkim_selector" class="mdl-textfield__input" type="text" id="mxdkim_selector" aria-label="DKIM selector (optional)"> <label class="mdl-textfield__label" for="dkim_selector"> DKIM selector (optional) </label> </div> </form> </div> <div class="mdl-cell mdl-cell--2-col"></div> </div> </div> <div id="loader"></div> </div> <div class="cookie-notice mdl-components__warning" id="cookie-notice" style="display:none;"> <p class="cookie-notice"> This site uses cookies from Google to deliver its services and to analyze traffic. </p> <a href="https://policies.google.com/technologies/cookies" class="toolbox-external-link"> Learn more. </a> <button class="mdl-button mdl-button--colored mdl-js-button mdl-js-ripple-effect" id="cookie-notice-ack-button"> Ok, Got it. </button> </div> <footer class="mdl-mini-footer toolbox-footer"> <div class="mdl-mini-footer__left-section"> <ul class="mdl-mini-footer__link-list"> <li><a href='/apps/main/'>Home</a></li> <li><a href="/apps/main/feedback">Feedback</a></li> <li><a href="//www.google.com">Google</a></li> <li><a href="//www.google.com/intl/en/policies">Privacy & Terms</a></li> </ul> </div> <div class="mdl-mini-footer__right-section custom-right-footer"> <div class="sc-locales"> <label> <span>Change language:</span> <select onchange="javascript:switch_language(this);" id="localeselector"> <option value="id" > Bahasa Indonesia </option> <option value="da" > Dansk </option> <option value="de" > Deutsch </option> <option value="en" selected="selected" > English </option> <option value="es" > Español (España) </option> <option value="fil" > Filipino </option> <option value="fr" > Français (France) </option> <option value="it" > Italiano </option> <option value="hu" > Magyar </option> <option value="nl" > Nederlands </option> <option value="no" > Norsk </option> <option value="pl" > Polski </option> <option value="pt-BR" > Português (Brasil) </option> <option value="pt-PT" > Português (Portugal) </option> <option value="fi" > Suomi </option> <option value="sv" > Svenska </option> <option value="vi" > Tiếng Việt </option> <option value="tr" > Türkçe </option> <option value="cs" > Čeština </option> <option value="ru" > Русский </option> <option value="uk" > Українська </option> <option value="hi" > हिन्दी </option> <option value="th" > ภาษาไทย </option> <option value="zh-CN" > 中文 (简体) </option> <option value="zh-TW" > 中文 (繁體) </option> <option value="ja" > 日本語 </option> <option value="ko" > 한국어 </option> </select> </label> </div> </div> </footer> </main> </div> </body> </html>