I am having issue that Yahoo emails are not reaching recipients.

My organization started having this problem late Thursday evening 3/8/24 with emails outbound to Yahoo not getting delivered. After googling the issue I found this forum and the posting by Mitch Cohen regarding this article https://www.braze.com/resources/articles/yahoo-and-gmails-2024-new-sending-requirements  This article helped me understand it wasn't a Yahoo issue, it was our SPF, DKIM, and DMARC settings were not configured for our custom domain in MS Office 365. Using the following 3 articles by Microsoft I was able to follow and configure the required settings both in my Microsoft tenant and on my Wix domain account.

Step 1; Verify your MS Tenant has SPF configured. Mine had SPF already in place for my custom domain. https://learn.microsoft.com/en-us/microsoft-365/security/office-365-security/email-authentication-spf-configure?view=o365-worldwide&viewFallbackFrom=o365-worldwide%3FWT.mc_id%3D365AdminCSH_globalsearch

Step 2: Setup DKIM for your MS Custom domain account https://learn.microsoft.com/en-us/microsoft-365/security/office-365-security/email-authentication-dkim-configure?view=o365-worldwide

Step 3: Setup a Shared Mailbox in my MS tenant, for the DMARC process to allow us to receive email performance information. https://learn.microsoft.com/en-us/microsoft-365/admin/email/create-a-shared-mailbox?view=o365-worldwide

Step 4: Setup DMARC for my MS Custom Domain using the shared mailbox I created in step 3 https://learn.microsoft.com/en-us/microsoft-365/security/office-365-security/email-authentication-dmarc-configure?view=o365-worldwide

As I performed steps 1,2, and 4 I tested the header messages of my sent emails to both Gmail and Yahoo mailboxes that I had access. I used the site linked in the DKIM setup article to view my headers. https://mha.azurewebsites.net/

Overall investigating / reading and understanding the issue took about 2.5 hours much longer than the actual resolution. It took about 1.5 hours following the articles above and testing the settings to resolve the issue for us.

I hope you all find this post useful. I didn't go through all 7 pages of post here. Luckily the post by Mitch Cohen was on page 1 and it pointed me in the right direction. I checked the last page and Ron6576's post with the link https://easydmarc.com/tools/dmarc-lookup helped me confirm the issue. The EasyDMARC site is an easy tool to use but keep in mind they are selling a service to manage your DMARC process.

Cheers,

Have you found a resolution?

Undescribed does work. First be sure you are logged in with the same ID that is sending you these notifications. If you click subscribe (you may have to scroll to the right or be sure you go have a wide screen to see it) you will then see the unsubscribe option.

I just did this myself, and did not see “unsubscribe” until my flipped my phone sideways.

how do you get out of this thread???

there is no "unsubscribe" option. (Someone said to click "subscribe" and there would be a drop down to unsubscribe but that is not true.)