Tutorial, Business and Insurance: DNS

<span color:gray="" sans-serif="" style="background-color: #f8f8f8; color: #3c3e43; font-family: 'Helvetica Neue', Arial, Helvetica, sans-serif; font-size: 10pt; orphans: 2; text-align: -webkit-auto; widows: 2;" tahoma="">If you get the following error when sending a message, as a bounce back NDR notification</span><br /><span color:gray="" sans-serif="" style="background-color: #f8f8f8; color: #3c3e43; font-family: 'Helvetica Neue', Arial, Helvetica, sans-serif; font-size: 10pt; orphans: 2; text-align: -webkit-auto; widows: 2;" tahoma="">Remote Server returned '<mx.mail.google.com #5.0.0 smtp; 551 5.0.0 Rejected, look at </span><a href="http://www.openspf.org/why.html?sender=allison@topel-silver.com&ip=69.84.129.239&receiver=mailin1-trm.thomsonreuters.com" style="background-color: #f8f8f8; color: #007aaa; font-family: 'Helvetica Neue', Arial, Helvetica, sans-serif; font-size: 15px; line-height: 22px; orphans: 2; outline: none; text-align: -webkit-auto; text-decoration: none; widows: 2;"><span sans-serif="" style="font-size: 10pt;" tahoma="">http://www.openspf.org/why.html?sender=al@topel.com&ip=69.84.129.239&receiver=mailin1-trm.thomsonreuters.com</span></a><span color:gray="" sans-serif="" style="background-color: #f8f8f8; color: #3c3e43; font-family: 'Helvetica Neue', Arial, Helvetica, sans-serif; font-size: 10pt; orphans: 2; text-align: -webkit-auto; widows: 2;" tahoma="">>'</span><br /><span color:gray="" sans-serif="" style="background-color: #f8f8f8; color: #3c3e43; font-family: 'Helvetica Neue', Arial, Helvetica, sans-serif; font-size: 10pt; orphans: 2; text-align: -webkit-auto; widows: 2;" tahoma=""><br /></span><span color:gray="" sans-serif="" style="background-color: #f8f8f8; color: #3c3e43; font-family: 'Helvetica Neue', Arial, Helvetica, sans-serif; font-size: 10pt; orphans: 2; text-align: -webkit-auto; widows: 2;" tahoma="">This means that the recipient server is doing an SPF record check and it doesn't match. </span><br /><span color:gray="" sans-serif="" style="background-color: #f8f8f8; color: #3c3e43; font-family: 'Helvetica Neue', Arial, Helvetica, sans-serif; font-size: 10pt; orphans: 2; text-align: -webkit-auto; widows: 2;" tahoma=""><br /></span><span color:gray="" sans-serif="" style="background-color: #f8f8f8; color: #3c3e43; font-family: 'Helvetica Neue', Arial, Helvetica, sans-serif; font-size: 10pt; orphans: 2; text-align: -webkit-auto; widows: 2;" tahoma="">What needs to match? </span><br /><span color:gray="" sans-serif="" style="background-color: #f8f8f8; color: #3c3e43; font-family: 'Helvetica Neue', Arial, Helvetica, sans-serif; font-size: 10pt; orphans: 2; text-align: -webkit-auto; widows: 2;" tahoma=""><br /></span><span color:gray="" sans-serif="" style="background-color: #f8f8f8; color: #3c3e43; font-family: 'Helvetica Neue', Arial, Helvetica, sans-serif; font-size: 10pt; orphans: 2; text-align: -webkit-auto; widows: 2;" tahoma="">The IP of the server you are using needs to be added to the SPF record also known as a TXT record in your DNS you can perform an SPF look-up by going to: </span><br /><span color:gray="" sans-serif="" style="background-color: #f8f8f8; color: #3c3e43; font-family: 'Helvetica Neue', Arial, Helvetica, sans-serif; font-size: 10pt; orphans: 2; text-align: -webkit-auto; widows: 2;" tahoma=""><br /></span><span color:gray="" sans-serif="" style="background-color: #f8f8f8; orphans: 2; text-align: -webkit-auto; widows: 2;" tahoma=""><span style="color: #3c3e43; font-family: Helvetica Neue, Arial, Helvetica, sans-serif; font-size: x-small;">http://mxtoolbox.com/SuperTool.aspx?action=spf%3a&run=networktools</span></span><br /><span color:gray="" sans-serif="" style="background-color: #f8f8f8; orphans: 2; text-align: -webkit-auto; widows: 2;" tahoma=""><span style="color: #3c3e43; font-family: Helvetica Neue, Arial, Helvetica, sans-serif; font-size: x-small;"><br /></span></span><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhyH2kf2FQAhBnnwANl5EIrshJKL_HRQOyEtPHw6cUQwx4mIyG3vnOq5CyH4AakWAB0bP8PsS74UgD_GYsg5DBgr4nDNM7t0A5v5Gvr7ML0rRogI9VXDfKOM4AOaJGoKn4XlkCr7X5zowgA/s1600/spf-Icon.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhyH2kf2FQAhBnnwANl5EIrshJKL_HRQOyEtPHw6cUQwx4mIyG3vnOq5CyH4AakWAB0bP8PsS74UgD_GYsg5DBgr4nDNM7t0A5v5Gvr7ML0rRogI9VXDfKOM4AOaJGoKn4XlkCr7X5zowgA/s1600/spf-Icon.png" /></a></div><span color:gray="" sans-serif="" style="background-color: #f8f8f8; orphans: 2; text-align: -webkit-auto; widows: 2;" tahoma=""><span style="color: #3c3e43; font-family: Helvetica Neue, Arial, Helvetica, sans-serif; font-size: x-small;"><br /></span></span><span color:gray="" sans-serif="" style="background-color: #f8f8f8; orphans: 2; text-align: -webkit-auto; widows: 2;" tahoma=""><span style="color: #3c3e43; font-family: Helvetica Neue, Arial, Helvetica, sans-serif; font-size: x-small;"><br /></span></span><span color:gray="" sans-serif="" style="background-color: #f8f8f8; orphans: 2; text-align: -webkit-auto; widows: 2;" tahoma=""><span style="color: #3c3e43; font-family: Helvetica Neue, Arial, Helvetica, sans-serif; font-size: x-small;"><br /></span></span><span color:gray="" sans-serif="" style="background-color: #f8f8f8; orphans: 2; text-align: -webkit-auto; widows: 2;" tahoma=""><span style="color: #3c3e43; font-family: Helvetica Neue, Arial, Helvetica, sans-serif; font-size: x-small;">Explained: </span></span><br /><span color:gray="" sans-serif="" style="background-color: #f8f8f8; orphans: 2; text-align: -webkit-auto; widows: 2;" tahoma=""><span style="color: #3c3e43; font-family: Helvetica Neue, Arial, Helvetica, sans-serif; font-size: x-small;"><br /></span></span><span color:gray="" sans-serif="" style="background-color: #f8f8f8; orphans: 2; text-align: -webkit-auto; widows: 2;" tahoma=""></span><br /><table class="layout" style="border-collapse: collapse; border-spacing: 0px; border-width: 0px; color: black; empty-cells: hide; font-family: Arial, Helvetica, sans-serif; font-size: 14px; margin-top: 0px; width: 1349px;"><tbody style="margin-top: 0px;"><tr style="margin-top: 0px;"><td id="title" style="background-color: #d8e0ff; border-width: 0px; height: 1px; margin-top: 0px; padding: 0.7em; vertical-align: top;"><h1 style="margin: 0px;">Sender Policy Framework</h1><h2 style="margin: 0px;"><a href="http://www.openspf.org/?back=Why" style="color: #0000b0; cursor: pointer; margin: 0px; text-decoration: none;">Why</a></h2></td></tr><tr style="margin-top: 0px;"><td style="border-width: 0px; margin-top: 0px; padding: 0px; vertical-align: top;"><table class="layout" style="border-collapse: collapse; border-spacing: 0px; border-width: 0px; empty-cells: hide; margin-bottom: 0px; margin-top: 0px; width: 1349px;"><tbody style="margin-top: 0px;"><tr style="margin-top: 0px;"><td id="content" style="border-width: 0px; margin-top: 0px; padding: 0.7em; vertical-align: top; width: 1127.96875px;"><div class="wikitext" style="margin-bottom: 1em; margin-top: 0.3em; padding-top: 0px;"><h2 style="margin-bottom: 0.5em; margin-top: 0px;"><a href="https://www.blogger.com/null" name="0.1" style="color: #0000b0; cursor: pointer; margin-top: 0px;"></a>Why did SPF cause my mail to be rejected?</h2><h3 style="margin-bottom: 0.5em; margin-top: 1em;"><a href="https://www.blogger.com/null" name="0.1.1" style="color: #0000b0; cursor: pointer; margin-top: 0px;"></a>What is SPF?</h3><div style="margin-bottom: 1em;">SPF is an extension to Internet e-mail. It prevents unauthorized people from forging your e-mail address (see the <a class="wikipagelink link-wiki" href="http://www.openspf.org/Introduction" style="color: #0000b0; cursor: pointer; margin-top: 0px; text-decoration: none;">introduction</a>). But for it to work, your own or your e-mail service provider's setup may need to be adjusted. Otherwise, the system may mistake you for an unauthorized sender.</div><div style="margin-bottom: 1em;">Note that there is no central institution that enforces SPF. If a message of yours gets blocked due to SPF, this is because (1) your domain has declared an SPF policy that forbids you to send through the mail server through which you sent the message, and (2) the recipient's mail server detected this and blocked the message.</div><div class="wookee-box-blue" style="background-color: #e7ebfc; border-color: rgb(231, 235, 252); margin: 0px 1em 1em 0px; padding: 0.7em;"><h3 style="margin-bottom: 0.5em; margin-top: 0px;"><em class="em3" style="margin-top: 0px;">mailin1-trm.thomsonreuters.com</em> rejected a message that claimed an envelope sender address of <em class="em3" style="margin-top: 0px;">al@topel.com</em>.</h3><div style="margin-bottom: 1em;"><tt style="font-size: 12px; margin-top: 0px;">mailin1-trm.thomsonreuters.com</tt> received a message from <tt style="font-size: 12px; margin-top: 0px;">zixvpm03.reflexion.net (69.84.129.239)</tt> that claimed an envelope sender address of <tt style="font-size: 12px; margin-top: 0px;">al@topel.com</tt>.</div>The domain <tt style="font-size: 12px; margin-top: 0px;">topel.com</tt> has not published an SPF policy. It is possible that the receiving mail server refuses all mail from domains that do not have an SPF policy.</div><hr class="thin" style="border-style: dashed none none; border-top-color: rgb(176, 176, 176); clear: both; height: 1px; margin: 1.5em 0px;" /><h3 style="margin-bottom: 0.5em; margin-top: 1em;"><a href="https://www.blogger.com/null" name="0.1.2" style="color: #0000b0; cursor: pointer; margin-top: 0px;"></a>How can I reference this web page for explaining SPF results?</h3><div style="margin-bottom: 1em;">This web page is a public service of the SPF project. SPF implementations can (and do) use it to help explain the results of SPF checks by presenting to users a parameterized link to this page. See the <a class="wikipagelink link-wiki" href="http://www.openspf.org/Why/API" style="color: #0000b0; cursor: pointer; margin-top: 0px; text-decoration: none;">"Why?" page documentation</a> for details on how this works.</div></div><hr class="wikilinefooter" style="border-style: dashed none none; border-top-color: rgb(176, 176, 176); clear: both; height: 1px; margin: 1.5em 0px;" /><div class="wikifooter" style="margin-bottom: 1em; margin-top: 0px;"><form action="http://www.openspf.org/" enctype="application/x-www-form-urlencoded" method="post" style="margin-top: 0px;"><a class="wikipageedit link-meta" href="http://www.openspf.org/?action=edit&id=Why" style="color: firebrick; cursor: pointer; margin-top: 0px; text-decoration: none;">Edit text of this page</a> | <a href="http://www.openspf.org/?action=history&id=Why" style="color: #0000b0; cursor: pointer; margin-top: 0px; text-decoration: none;">View other revisions</a><br style="margin-top: 0px;" />Last edited 2008-04-04 13:27 (UTC) by <a href="http://www.openspf.org/?Frank_Ellermann" style="color: #0000b0; cursor: pointer; margin-top: 0px; text-decoration: none;" title="ID 2859 from hmbg-d9b88e0a.pool.mediaWays.net">Frank Ellermann</a> <a href="http://www.openspf.org/?action=browse&diff=1&id=Why" style="color: #0000b0; cursor: pointer; margin-top: 0px; text-decoration: none;">(diff)</a><br /></form></div></td></tr></tbody></table></td></tr></tbody></table>

If you get the following error when sending a message, as a bounce back NDR notification Remote Server returned '<mx.mail.google.com ...

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