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class="site-body site-pad"> <div class="site-container"> <div id="primary" class="content-area"> <article id="post-1302" class="alba-blog-standard-block post-1302 post type-post status-publish format-standard hentry category-arc category-blog tag-arc tag-dmarc tag-email-authentication tag-filtering tag-forwarding tag-intermediaries tag-mailing-lists tag-microsoft tag-rfc7489 tag-rfc8617"> <div class="alba-blog-standard-block-imgs"> <div class="alba-blog-standard-block-img-carousel-wrapper alba-blog-standard-block-img-wrapper-remove"> <div class="alba-blog-standard-block-img-prev"></div> <div class="alba-blog-standard-block-img-next"></div> <div class="alba-blog-standard-block-img-carousel alba-blog-standard-block-img-remove"> <img src="https://dmarc.org/wp-content/uploads/2023/05/msft-using-arc-in-o365.png" alt="msft-using-arc-in-o365" /> </div> </div> </div> <div class="alba-blog-standard-block-content alba-blog-standard-has-images"> <header class="entry-header"> <h3 class="entry-title"><a href="https://dmarc.org/2023/02/microsoft-allows-365-admins-to-accept-arc-forwarders/" rel="bookmark">Microsoft Allows 365 Admins To Accept ARC Forwarders</a></h3> <div class="entry-meta"> <i class="fa fa-calendar"></i> <a href="https://dmarc.org/2023/02/microsoft-allows-365-admins-to-accept-arc-forwarders/" title="7:28 pm" rel="bookmark"><time class="entry-date published" datetime="2023-02-18T19:28:43-08:00">February 18, 2023</time><time class="updated" datetime="2023-05-21T19:30:14-07:00">May 21, 2023</time></a><span class="byline"><span class="author vcard"> <i class="fa fa-user"></i> <a class="url fn n" href="https://dmarc.org/author/smj/" title="View all posts by Steve Jones" rel="author">Steve Jones</a></span></span> </div> </header> <div class="entry-content"> <p>Back in October 2019, Microsoft included ARC support in their Microsoft 365 Roadmap, stating that “[ARC] is now enabled for Office 365 hosted mailboxes.” But at that time it could only be used between Office 365 tenants, or from Microsoft’s in-house services. However in June of 2022 they made it possible for each tenant to […]</p> </div> <footer class="alba-blog-standard-post-footer"> <div class="alba-blog-standard-post-footer-left"> <span class="cat-links"> <i class="fa fa-list"></i> Posted in <a href="https://dmarc.org/category/arc/" rel="category tag">ARC</a>, <a href="https://dmarc.org/category/blog/" rel="category tag">Blog</a> </span> <span class="tags-links"> <i class="fa fa-tags"></i> Tags <a href="https://dmarc.org/tag/arc/" rel="tag">ARC</a>, <a href="https://dmarc.org/tag/dmarc/" rel="tag">DMARC</a>, <a href="https://dmarc.org/tag/email-authentication/" rel="tag">email authentication</a>, <a href="https://dmarc.org/tag/filtering/" rel="tag">filtering</a>, <a href="https://dmarc.org/tag/forwarding/" rel="tag">forwarding</a>, <a href="https://dmarc.org/tag/intermediaries/" rel="tag">intermediaries</a>, <a href="https://dmarc.org/tag/mailing-lists/" rel="tag">mailing lists</a>, <a href="https://dmarc.org/tag/microsoft/" rel="tag">Microsoft</a>, <a href="https://dmarc.org/tag/rfc7489/" rel="tag">RFC7489</a>, <a href="https://dmarc.org/tag/rfc8617/" rel="tag">RFC8617</a> </span> </div> <div class="alba-blog-standard-post-footer-right"> <a href="https://dmarc.org/2023/02/microsoft-allows-365-admins-to-accept-arc-forwarders/" class="alba-blog-permalink-btn">Read More</a> </div> <div class="clearboth"></div> </footer> </div> <div class="clearboth"></div> </article> <article id="post-843" class="alba-blog-standard-block post-843 post type-post status-publish format-standard hentry category-blog tag-aggregate-reports tag-dkim tag-dmarc tag-forwarding tag-reporting tag-spf tag-third-party-senders"> <div class="alba-blog-standard-block-imgs"> <div class="alba-blog-standard-block-img-carousel-wrapper alba-blog-standard-block-img-wrapper-remove"> <div class="alba-blog-standard-block-img-prev"></div> <div class="alba-blog-standard-block-img-next"></div> <div class="alba-blog-standard-block-img-carousel alba-blog-standard-block-img-remove"> <img src="https://dmarc.org/wp-content/uploads/2017/03/dmarcian-forwarders-2017-03-05.png" alt="Report: Forwarded Email" /> <img src="https://dmarc.org/wp-content/uploads/2017/03/SPF-forwarding-example.png" alt="SPF-forwarding-example" /> </div> </div> </div> <div class="alba-blog-standard-block-content alba-blog-standard-has-images"> <header class="entry-header"> <h3 class="entry-title"><a href="https://dmarc.org/2017/03/can-i-use-dmarc-if-i-have-only-deployed-spf/" rel="bookmark">Can I Use DMARC If I Have Only Deployed SPF?</a></h3> <div class="entry-meta"> <i class="fa fa-calendar"></i> <a href="https://dmarc.org/2017/03/can-i-use-dmarc-if-i-have-only-deployed-spf/" title="6:30 am" rel="bookmark"><time class="entry-date published" datetime="2017-03-06T06:30:16-08:00">March 6, 2017</time><time class="updated" datetime="2017-03-06T00:58:39-08:00">March 6, 2017</time></a><span class="byline"><span class="author vcard"> <i class="fa fa-user"></i> <a class="url fn n" href="https://dmarc.org/author/smj/" title="View all posts by Steve Jones" rel="author">Steve Jones</a></span></span> </div> </header> <div class="entry-content"> <p>A question people asked repeatedly in 2016 was whether or not their organization could deploy DMARC if they only used SPF at present. They knew the recommendation is to use both DKIM and SPF, and were concerned that their organizations couldn’t benefit from DMARC without DKIM. The short answer is that you can use DMARC […]</p> </div> <footer class="alba-blog-standard-post-footer"> <div class="alba-blog-standard-post-footer-left"> <span class="cat-links"> <i class="fa fa-list"></i> Posted in <a href="https://dmarc.org/category/blog/" rel="category tag">Blog</a> </span> <span class="tags-links"> <i class="fa fa-tags"></i> Tags <a href="https://dmarc.org/tag/aggregate-reports/" rel="tag">aggregate reports</a>, <a href="https://dmarc.org/tag/dkim/" rel="tag">DKIM</a>, <a href="https://dmarc.org/tag/dmarc/" rel="tag">DMARC</a>, <a href="https://dmarc.org/tag/forwarding/" rel="tag">forwarding</a>, <a href="https://dmarc.org/tag/reporting/" rel="tag">reporting</a>, <a href="https://dmarc.org/tag/spf/" rel="tag">SPF</a>, <a href="https://dmarc.org/tag/third-party-senders/" rel="tag">third-party senders</a> </span> </div> <div class="alba-blog-standard-post-footer-right"> <a href="https://dmarc.org/2017/03/can-i-use-dmarc-if-i-have-only-deployed-spf/" class="alba-blog-permalink-btn">Read More</a> </div> <div class="clearboth"></div> </footer> </div> <div class="clearboth"></div> </article> <article id="post-522" class="alba-blog-standard-block post-522 post type-post status-publish format-standard hentry category-blog tag-arc tag-forwarding tag-indirect-mailflows tag-mailing-lists"> <div class="alba-blog-standard-block-content alba-blog-standard-no-images"> <header class="entry-header"> <h3 class="entry-title"><a href="https://dmarc.org/2016/01/arc-interoperability-testing-day-february-19th/" rel="bookmark">ARC Interoperability Testing Day: February 19th</a></h3> <div class="entry-meta"> <i class="fa fa-calendar"></i> <a href="https://dmarc.org/2016/01/arc-interoperability-testing-day-february-19th/" title="12:00 pm" rel="bookmark"><time class="entry-date published" datetime="2016-01-11T12:00:41-08:00">January 11, 2016</time><time class="updated" datetime="2016-02-25T20:04:01-08:00">February 25, 2016</time></a><span class="byline"><span class="author vcard"> <i class="fa fa-user"></i> <a class="url fn n" href="https://dmarc.org/author/smj/" title="View all posts by Steve Jones" rel="author">Steve Jones</a></span></span> </div> </header> <div class="entry-content"> <p>The interoperability testing event mentioned when ARC was announced in October (see this press release) has been scheduled for Friday, February 19th, 2016 in San Francisco. Parties implementing the ARC protocol in their product or service by that date should consider participating in the event. Those parties should join the arc-discuss mailing list if they […]</p> </div> <footer class="alba-blog-standard-post-footer"> <div class="alba-blog-standard-post-footer-left"> <span class="cat-links"> <i class="fa fa-list"></i> Posted in <a href="https://dmarc.org/category/blog/" rel="category tag">Blog</a> </span> <span class="tags-links"> <i class="fa fa-tags"></i> Tags <a href="https://dmarc.org/tag/arc/" rel="tag">ARC</a>, <a href="https://dmarc.org/tag/forwarding/" rel="tag">forwarding</a>, <a href="https://dmarc.org/tag/indirect-mailflows/" rel="tag">indirect mailflows</a>, <a href="https://dmarc.org/tag/mailing-lists/" rel="tag">mailing lists</a> </span> </div> <div class="alba-blog-standard-post-footer-right"> <a href="https://dmarc.org/2016/01/arc-interoperability-testing-day-february-19th/" class="alba-blog-permalink-btn">Read More</a> </div> <div class="clearboth"></div> </footer> </div> <div class="clearboth"></div> </article> </div><!-- #primary --> <div id="secondary" 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