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<p class="MsoNormal"><font size="2" face="Calibri"><span style="font-size:11.0pt">I totally share this opinion. We discussed something like this also in the GitHub repo of the Mozilla Root Store policy:
</span><a href="https://github.com/mozilla/pkipolicy/issues/196">Clarify S/MIME Validation practices for domains controlled by the CA or an Affiliate · Issue #196 · mozilla/pkipolicy (github.com)</a></font><o:p></o:p></p>
<p class="MsoNormal"><font size="2" face="Calibri"><span style="font-size:11.0pt"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Calibri"><span style="font-size:11.0pt">(posting not in my Siemens role but in my TeleTrust role)<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Calibri"><span style="font-size:11.0pt"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">With best regards,<br>
Rufus Buschart<br>
<br>
Siemens AG<br>
IT IN COR<br>
Freyeslebenstr. 1<br>
91058 Erlangen, Germany <br>
Tel.: +49 1522 2894134<br>
<a href="mailto:rufus.buschart@siemens.com">mailto:rufus.buschart@siemens.com</a><br>
<a href="http://www.twitter.com/siemens">www.twitter.com/siemens</a><br>
<a href="https://siemens.com">www.siemens.com</a><br>
</span></font><font size="2" face="Arial"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><img border="0" width="202" height="80" style="width:2.1041in;height:.8333in" id="_x0000_i1025" src="cid:image001.gif@01D6C18A.27310560"></span></font><font size="2" face="Arial"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><br>
</span></font><font size="1" face="Arial"><span style="font-size:8.0pt;font-family:"Arial",sans-serif">Siemens Aktiengesellschaft: Chairman of the Supervisory Board: Jim Hagemann Snabe; Managing Board: Joe Kaeser, Chairman, President and Chief Executive Officer;
Roland Busch, Klaus Helmrich, Cedrik Neike, Matthias Rebellius, Ralf P. Thomas, Judith Wiese; Registered offices: Berlin and Munich, Germany; Commercial registries: Berlin-Charlottenburg, HRB 12300, Munich, HRB 6684; WEEE-Reg.-No. DE 23691322<br>
<br>
</span></font><o:p></o:p></p>
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<p class="MsoNormal"><b><font size="2" face="Calibri"><span style="font-size:11.0pt;font-weight:bold">From:</span></font></b> Smcwg-public <smcwg-public-bounces@cabforum.org>
<b><span style="font-weight:bold">On Behalf Of </span></b>Wendy Brown - QT3LB-C via Smcwg-public<br>
<b><span style="font-weight:bold">Sent:</span></b> Freitag, 20. November 2020 15:35<br>
<b><span style="font-weight:bold">To:</span></b> Corey Bonnell <Corey.Bonnell@digicert.com><br>
<b><span style="font-weight:bold">Cc:</span></b> SMIME Certificate Working Group <smcwg-public@cabforum.org><br>
<b><span style="font-weight:bold">Subject:</span></b> Re: [Smcwg-public] email addresses in S/MIME certificates<o:p></o:p></p>
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<p class="MsoNormal"><font size="2" face="Calibri"><span style="font-size:11.0pt"><o:p> </o:p></span></font></p>
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<p class="MsoNormal"><font size="2" face="Calibri"><span style="font-size:11.0pt">I haven't really thought through the validation aspects yet, but I mainly support an environment where the certs are issued to those affiliated with an organization and the CA
has a direct relationship with that organization. If the DNS portion of the UPN matches the DNS portion of an email that has been validated, I would consider that sufficient if the portion of the UPN in front of the @ was supplied by the organization, which
is also responsible for assigning that UPN to the individual. As others have said the UPN value is for authentication not secure email and at this time may not have to be fully validated to the same level as the email address. But should not be prohibited
from being included in the certificate as it may break many current implementations unnecessarily.<o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="2" face="Calibri"><span style="font-size:11.0pt"><o:p> </o:p></span></font></p>
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<p class="MsoNormal"><font size="2" face="Calibri"><span style="font-size:11.0pt">thanks,<br clear="all">
<o:p></o:p></span></font></p>
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<p><font size="2" face="Segoe Script"><span style="font-size:11.0pt;font-family:"Segoe Script"">Wendy</span></font><o:p></o:p></p>
<p><font size="2" face="Calibri"><span style="font-size:9.5pt">Wendy Brown<br>
Supporting GSA FPKI<br>
Protiviti Government Services</span></font><o:p></o:p></p>
<p><font size="2" face="Calibri"><span style="font-size:11.0pt"> 703-965-2990 (cell)<o:p></o:p></span></font></p>
<p><font size="2" face="Calibri"><span style="font-size:11.0pt"><a href="mailto:wendy.brown@gsa.gov" target="_blank"><font size="2"><span style="font-size:9.5pt">wendy.brown@gsa.gov</span></font></a><br>
<a href="mailto:wendy.brown@protiviti.com" target="_blank">wendy.brown@protiviti.com</a><o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="2" face="Calibri"><span style="font-size:11.0pt"><o:p> </o:p></span></font></p>
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<p class="MsoNormal"><font size="2" face="Calibri"><span style="font-size:11.0pt"><o:p> </o:p></span></font></p>
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<p class="MsoNormal"><font size="2" face="Calibri"><span style="font-size:11.0pt">On Fri, Nov 20, 2020 at 9:17 AM Corey Bonnell <<a href="mailto:Corey.Bonnell@digicert.com">Corey.Bonnell@digicert.com</a>> wrote:<o:p></o:p></span></font></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt">Hi Wendy,<o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt">I realize that we haven’t quite yet discussed the validation processes for SAN entries, but how would you envision such
a validation process for UPNs to work if we permit a UPN SAN to not match one of the validated email addresses?<o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt"> <o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt">Thanks,<o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt">Corey<o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt"> <o:p></o:p></span></font></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><font size="2" face="Calibri"><span style="font-size:11.0pt;font-weight:bold">From:</span></font></b> Smcwg-public <<a href="mailto:smcwg-public-bounces@cabforum.org" target="_blank">smcwg-public-bounces@cabforum.org</a>>
<b><span style="font-weight:bold">On Behalf Of </span></b>Wendy Brown - QT3LB-C via Smcwg-public<br>
<b><span style="font-weight:bold">Sent:</span></b> Friday, November 20, 2020 8:07 AM<br>
<b><span style="font-weight:bold">To:</span></b> Dimitris Zacharopoulos (HARICA) <<a href="mailto:dzacharo@harica.gr" target="_blank">dzacharo@harica.gr</a>>; SMIME Certificate Working Group <<a href="mailto:smcwg-public@cabforum.org" target="_blank">smcwg-public@cabforum.org</a>><br>
<b><span style="font-weight:bold">Subject:</span></b> Re: [Smcwg-public] email addresses in S/MIME certificates<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt"> <o:p></o:p></span></font></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt">Also I do not remember a discussion that the UPN, if present, has to be identical to the email address. Although I
may have missed at least 1 of the calls. I do not think this is always the case.<o:p></o:p></span></font></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt">Another question is will we allow more than one email address SAN?<o:p></o:p></span></font></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt"> <o:p></o:p></span></font></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt">thanks,<br clear="all">
<o:p></o:p></span></font></p>
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<p><font size="2" face="Segoe Script"><span style="font-size:11.0pt;font-family:"Segoe Script"">Wendy</span></font><o:p></o:p></p>
<p><font size="2" face="Calibri"><span style="font-size:9.5pt">Wendy Brown<br>
Supporting GSA FPKI<br>
Protiviti Government Services</span></font><o:p></o:p></p>
<p><font size="2" face="Calibri"><span style="font-size:11.0pt"> 703-965-2990 (cell)<o:p></o:p></span></font></p>
<p><font size="2" face="Calibri"><span style="font-size:11.0pt"><a href="mailto:wendy.brown@gsa.gov" target="_blank"><font size="2"><span style="font-size:9.5pt">wendy.brown@gsa.gov</span></font></a><br>
<a href="mailto:wendy.brown@protiviti.com" target="_blank">wendy.brown@protiviti.com</a><o:p></o:p></span></font></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt"> <o:p></o:p></span></font></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt"> <o:p></o:p></span></font></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt">On Fri, Nov 20, 2020 at 6:19 AM Dimitris Zacharopoulos (HARICA) via Smcwg-public <<a href="mailto:smcwg-public@cabforum.org" target="_blank">smcwg-public@cabforum.org</a>>
wrote:<o:p></o:p></span></font></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><font size="2" face="Calibri"><span style="font-size:11.0pt"><br>
I believe this proposal prohibits <i><span style="font-style:italic">directoryName
</span></i>values<i><span style="font-style:italic"> </span></i>in the subjectAltName extention. I remember that the intent of the first version of S/MIME requirements was not to prohibit identity information to be included in the Certificate Profile.<br>
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Dimitris.<o:p></o:p></span></font></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt">On 20/11/2020 12:11 π.μ., Stephen Davidson via Smcwg-public wrote:<o:p></o:p></span></font></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt">To date our discussion related to email addresses in S/MIME has been a general reference to rfc822Name along the lines
of:<o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt"> <o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:36.0pt">
<font size="2" face="Calibri"><span style="font-size:11.0pt">Extension ID: subjectAlternateName<o:p></o:p></span></font></p>
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<font size="2" face="Calibri"><span style="font-size:11.0pt">Required?: Yes<o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:36.0pt">
<font size="2" face="Calibri"><span style="font-size:11.0pt">Critical: Yes if the subject is an empty sequence; otherwise, SHOULD NOT be critical<o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:36.0pt">
<font size="2" face="Calibri"><span style="font-size:11.0pt">Permitted Value(s): MUST contain at least one rfc822Name value. MUST NOT contain values of type: dNSName, iPAddress, uniformResourceIdentifier. otherName values (such as Microsoft UPN) MAY
be included if the value is identical to an rfc822Name expressed in the SAN extension. Any rfc822Name and otherName value in the Subject DN must be repeated in the SAN extension. Each rfc822Name and otherName value must be verified with publicly documented
and audited measures in accordance with Section 3.2.2.<o:p></o:p></span></font></p>
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<font size="2" face="Calibri"><span style="font-size:11.0pt">References: RFC 5280, Section 4.2.1.6<o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt"> <o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt">S/MIME and rfc822Name has enjoyed a proliferation of standards which leads to the question:<o:p></o:p></span></font></p>
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<li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1">
<font size="2" face="Calibri"><span style="font-size:11.0pt">Do we wish to summarise those rules relating to rfc822Name in this standard or in an informative appendix?<o:p></o:p></span></font></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1">
<font size="2" face="Calibri"><span style="font-size:11.0pt">Or do wish simply to provide a listing of the relevant standards?<o:p></o:p></span></font></li></ul>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt"> <o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt">If the latter, I believe the most relevant would include RFC 5322 (internet message format, sections 3.2.3 and 3.4.1),
RFC 3696 (informational, checking of names), and RFC 8398 (internationalized email addresses).<o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt"> <o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt">Missing anything? Comments?<o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt"> <o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt">Best regards, Stephen<o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt"> <o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt">RFC 5322: <a href="https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftools.ietf.org%2Fhtml%2Frfc5322&data=04%7C01%7Crufus.buschart%40siemens.com%7Ced7721e7d6a648b6459308d88d617692%7C38ae3bcd95794fd4addab42e1495d55a%7C1%7C0%7C637414797024475684%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=%2B0IPh01Xqlo%2BFUaOl0IJxi4vbO9Nzh7lnOiC%2BfAhWlI%3D&reserved=0" target="_blank">https://tools.ietf.org/html/rfc5322</a><o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt">RFC 3696: <a href="https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftools.ietf.org%2Fhtml%2Frfc3696&data=04%7C01%7Crufus.buschart%40siemens.com%7Ced7721e7d6a648b6459308d88d617692%7C38ae3bcd95794fd4addab42e1495d55a%7C1%7C0%7C637414797024485635%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=csF5puDjoSirURdMHELs6%2FB6h0eWOGP3eBv2DOXVekk%3D&reserved=0" target="_blank">https://tools.ietf.org/html/rfc3696</a><o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt">RFC 8398:
<a href="https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftools.ietf.org%2Fhtml%2Frfc8398&data=04%7C01%7Crufus.buschart%40siemens.com%7Ced7721e7d6a648b6459308d88d617692%7C38ae3bcd95794fd4addab42e1495d55a%7C1%7C0%7C637414797024485635%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=RBaVDNes%2By68KO0UKVbw5XrqYTSMPjnHLx%2Bk09i00sQ%3D&reserved=0" target="_blank">
https://tools.ietf.org/html/rfc8398</a><o:p></o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt"> <o:p></o:p></span></font></p>
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<pre><font size="2" face="Courier New"><span style="font-size:10.0pt">_______________________________________________<o:p></o:p></span></font></pre>
<pre><font size="2" face="Courier New"><span style="font-size:10.0pt">Smcwg-public mailing list<o:p></o:p></span></font></pre>
<pre><font size="2" face="Courier New"><span style="font-size:10.0pt"><a href="mailto:Smcwg-public@cabforum.org" target="_blank">Smcwg-public@cabforum.org</a><o:p></o:p></span></font></pre>
<pre><font size="2" face="Courier New"><span style="font-size:10.0pt"><a href="https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.cabforum.org%2Fmailman%2Flistinfo%2Fsmcwg-public&data=04%7C01%7Crufus.buschart%40siemens.com%7Ced7721e7d6a648b6459308d88d617692%7C38ae3bcd95794fd4addab42e1495d55a%7C1%7C0%7C637414797024495590%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=2Ug%2FuFL%2FAe3rBuauwiaKqKq9G2YFRKAqDsgpvTOvvSE%3D&reserved=0" target="_blank">https://lists.cabforum.org/mailman/listinfo/smcwg-public</a><o:p></o:p></span></font></pre>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt"> <o:p></o:p></span></font></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Calibri"><span style="font-size:11.0pt">_______________________________________________<br>
Smcwg-public mailing list<br>
<a href="mailto:Smcwg-public@cabforum.org" target="_blank">Smcwg-public@cabforum.org</a><br>
<a href="https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.cabforum.org%2Fmailman%2Flistinfo%2Fsmcwg-public&data=04%7C01%7Crufus.buschart%40siemens.com%7Ced7721e7d6a648b6459308d88d617692%7C38ae3bcd95794fd4addab42e1495d55a%7C1%7C0%7C637414797024495590%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=2Ug%2FuFL%2FAe3rBuauwiaKqKq9G2YFRKAqDsgpvTOvvSE%3D&reserved=0" target="_blank">https://lists.cabforum.org/mailman/listinfo/smcwg-public</a><o:p></o:p></span></font></p>
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