<div dir="ltr"><div class="gmail_default" style="font-size:small">Hi Ali,</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">We deployed the change to only plaintext emails last week. Can you confirm if this improves things from your side for the DMARC results. I am also also our IT admin to pull the reports for the past couple of days to see if failures are still being reported to us.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">Cheers,</div><div class="gmail_default" style="font-size:small">Lincoln</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Feb 8, 2023 at 11:20 AM Ali Alnubani <<a href="mailto:alialnu@nvidia.com">alialnu@nvidia.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg5465799713237415436"> <div style="overflow-wrap: break-word;"> <div class="m_5465799713237415436WordSection1"> <p class="MsoNormal"><span lang="EN-US">> Just to make sure, your example is one that failed, correct?<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US">Correct, the copy I got failed DKIM and DMARC authentication.<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US">> Changing the content / format type will need a little more investigation, just to make sure the change wouldn't break other emails being sent. Does the message content type impact the DMARC evaluation? I thought it was more about headers, routing, and approved mail hosts, etc. <u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US">Non plaintext emails are more likely to be mangled by Mailman, breaking DKIM signature verification, and DMARC as a result.<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p> <p class="MsoNormal"><span lang="EN-US">Regards,<br> Ali<u></u><u></u></span></p> <p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p> <div style="border-top:none;border-right:none;border-bottom:none;border-left:1.5pt solid blue;padding:0in 0in 0in 4pt"> <div> <div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0in 0in"> <p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Lincoln Lavoie <<a href="mailto:lylavoie@iol.unh.edu" target="_blank">lylavoie@iol.unh.edu</a>> <br> <b>Sent:</b> Wednesday, February 8, 2023 5:37 PM<br> <b>To:</b> Ali Alnubani <<a href="mailto:alialnu@nvidia.com" target="_blank">alialnu@nvidia.com</a>><br> <b>Cc:</b> Aaron Conole <<a href="mailto:aconole@redhat.com" target="_blank">aconole@redhat.com</a>>; <a href="mailto:techboard@dpdk.org" target="_blank">techboard@dpdk.org</a>; Lincoln Lavoie <<a href="mailto:lylavioe@iol.unh.edu" target="_blank">lylavioe@iol.unh.edu</a>>; <a href="mailto:ci@dpdk.org" target="_blank">ci@dpdk.org</a><br> <b>Subject:</b> Re: UNH - DMARC issue<u></u><u></u></span></p> </div> </div> <p class="MsoNormal"><u></u> <u></u></p> <div> <div> <p class="MsoNormal"><span style="font-size:12pt">HI Ali,<u></u><u></u></span></p> </div> <div> <p class="MsoNormal"><span style="font-size:12pt"><u></u> <u></u></span></p> </div> <div> <p class="MsoNormal"><span style="font-size:12pt">The To / Cc fields all look identical to what was sent / logged on our internal list. I've attached the raw stuff email. Just to make sure, your example is one that failed, correct?<u></u><u></u></span></p> </div> <div> <p class="MsoNormal"><span style="font-size:12pt"><u></u> <u></u></span></p> </div> <div> <p class="MsoNormal"><span style="font-size:12pt">Changing the content / format type will need a little more investigation, just to make sure the change wouldn't break other emails being sent. Does the message content type impact the DMARC evaluation? I thought it was more about headers, routing, and approved mail hosts, etc. <u></u><u></u></span></p> </div> <div> <p class="MsoNormal"><span style="font-size:12pt"><u></u> <u></u></span></p> </div> <div> <p class="MsoNormal"><span style="font-size:12pt">Cheers,<br> Lincoln<u></u><u></u></span></p> </div> </div> <p class="MsoNormal"><u></u> <u></u></p> <div> <div> <p class="MsoNormal">On Wed, Feb 8, 2023 at 4:02 AM Ali Alnubani <<a href="mailto:alialnu@nvidia.com" target="_blank">alialnu@nvidia.com</a>> wrote:<u></u><u></u></p> </div> <blockquote style="border-top:none;border-right:none;border-bottom:none;border-left:1pt solid rgb(204,204,204);padding:0in 0in 0in 6pt;margin-left:4.8pt;margin-right:0in"> <p class="MsoNormal">> -----Original Message-----<br> > From: Aaron Conole <<a href="mailto:aconole@redhat.com" target="_blank">aconole@redhat.com</a>><br> > Sent: Thursday, February 2, 2023 4:42 PM<br> > To: <a href="mailto:techboard@dpdk.org" target="_blank">techboard@dpdk.org</a><br> > Cc: Lincoln Lavoie <<a href="mailto:lylavioe@iol.unh.edu" target="_blank">lylavioe@iol.unh.edu</a>>; <a href="mailto:ci@dpdk.org" target="_blank">ci@dpdk.org</a><br> > Subject: UNH - DMARC issue<br> > <br> > Hi all,<br> > <br> > UNH reported that their IT will be turning on DMARC enforcement "soon."<br> > I'm not sure when that will exactly take place, but as part of that,<br> > they found there was an issue with the DPDK mailing lists doing some<br> > header rewriting which will break email bounces via the mailing list to<br> > the lab.<br> > <br> > I think Ali is currently investigating, but I'm sending the email here<br> > to make sure you're aware.<br> > <br> > -Aaron<br> <br> Hello, and apologies for the delay,<br> <br> I can confirm that DMARC is failing for some of the reports, but I don't see obvious mangling to the headers or bodies of these emails.<br> <br> Can you please help verify that the list of recipients in To and Cc isn't being mangled for the reports failing DMARC? Example:<br> <a href="https://inbox.dpdk.org/test-report/20230208081905.C6CB9600AB@dpdk-ubuntu.dpdklab.iol.unh.edu/" target="_blank">https://inbox.dpdk.org/test-report/20230208081905.C6CB9600AB@dpdk-ubuntu.dpdklab.iol.unh.edu/</a><br> <br> Would it also be possible to switch the format/content-type of these emails from html to text/plain as way to try and mitigate this?<br> <br> Thanks,<br> Ali<u></u><u></u></p> </blockquote> </div> <p class="MsoNormal"><br clear="all"> <u></u><u></u></p> <div> <p class="MsoNormal"><u></u> <u></u></p> </div> <p class="MsoNormal">-- <u></u><u></u></p> <div> <div> <div> <div> <div> <div> <div> <div> <div> <div> <div> <p class="MsoNormal"><b>Lincoln Lavoie</b><u></u><u></u></p> </div> <div> <p class="MsoNormal">Principal Engineer, Broadband Technologies<u></u><u></u></p> </div> <div> <p class="MsoNormal">21 Madbury Rd., Ste. 100, Durham, NH 03824<u></u><u></u></p> </div> <div> <p class="MsoNormal"><a href="mailto:lylavoie@iol.unh.edu" target="_blank">lylavoie@iol.unh.edu</a><u></u><u></u></p> </div> <div> <p class="MsoNormal"><a href="https://www.iol.unh.edu" target="_blank">https://www.iol.unh.edu</a><u></u><u></u></p> </div> <div> <p class="MsoNormal">+1-603-674-2755 (m)<u></u><u></u></p> </div> <div> <p class="MsoNormal"><a href="https://www.iol.unh.edu/" target="_blank"><span style="text-decoration:none"><img border="0" width="200" height="43" style="width: 2.0833in; height: 0.4479in;" id="m_5465799713237415436_x0000_i1025" src="https://ci3.googleusercontent.com/mail-sig/AIorK4xlKa1qM3IJKocZErE7ywuQuw_cfMEDW_tlU6Dw8dHUTWPjdawcJawE6HcYf7_JfXJnr9fvVJI"></span></a><u></u><u></u></p> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div></blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><b>Lincoln Lavoie</b><br></div><div>Principal Engineer, Broadband Technologies</div><div>21 Madbury Rd., Ste. 100, Durham, NH 03824</div><div><a href="mailto:lylavoie@iol.unh.edu" target="_blank">lylavoie@iol.unh.edu</a></div><div><a href="https://www.iol.unh.edu" target="_blank">https://www.iol.unh.edu</a></div><div>+1-603-674-2755 (m)</div><div><a href="https://www.iol.unh.edu" target="_blank"><img width="200" height="43" src="https://ci3.googleusercontent.com/mail-sig/AIorK4xlKa1qM3IJKocZErE7ywuQuw_cfMEDW_tlU6Dw8dHUTWPjdawcJawE6HcYf7_JfXJnr9fvVJI"></a><br></div></div></div></div></div></div></div></div></div></div></div>