May 18 2022 06:18 AM
May 26 2022 05:58 AM
May 26 2022 06:52 AM - edited May 26 2022 06:53 AM
This is the same message I received. I waited the "several days" and nothing has changed.
Unfortunately, Yahoo's suggestion that we contact thousands of clients and tell them to look in their Spam folder and mark our mail as "Not Spam" is not an option... especially when often our primary form of contact is by email.
May 26 2022 06:56 AM
@nstclairz In addition to that, marking a message as not spam does not mean that it will no longer be sent to the spam folder. It just sends a message to the postmasters. A few hours later, a message delivered from the same e-mail address to the same Yahoo address will go to the spam folder. The only resolution that I could find is to add that e-mail to contacts in Yahoo. Filtering does not work since Spam filters work before the user filters.
May 26 2022 07:10 AM
We are having this issue as well with one of our O365 tenants that send email to end users, many of the recipients have yahoo.com accounts. In testing, i created a brand new yahoo.com email account and sent email to it from 3 different Microsoft O365 tenants, all 3 emails went directly to spam folder. Then i sent mail to this brand new account from an aol address and gmail an they went to the inbox. This tells me Yahoo is definitely filtering Microsoft mail directly to spam since this was a brand new yahoo.com email account. When i run the headers for the email i sent from Microsoft accounts through mxtoolbox header analyzer, all checks are perfect, spf, dmarc, dkim pass so i know there is nothing wrong with the configuratin. Does yahoo have any checks to run the headers through so you know why they are labeling the mail as spam? So are people opening tickets with Microsoft because you think their sending IP's are on blacklists? Curious as to why more people are not opening tickets with Yahoo... Since these are free accounts, will Yahoo even do anything? I couldnt find where to open a ticket with Yahoo...
May 26 2022 07:19 AM - edited May 26 2022 07:29 AM
I did some quick testing on Hotmail and Outlook.com accounts. I got mixed results- my fully setup corporate tenant sent the mail fine to my Inbox at both Hotmail and Outlook.com, however, my other personal and test tenants delivered the mail to the Junk Email folder at both Outlook.com and Hotmail.com. One of my tests from a specific tenant went to junk the first time and to my inbox the second time.
This is concerning, as it lends some credibility to Microsoft's culpability here- at least partially.
May 26 2022 07:23 AM
May 26 2022 08:17 AM - edited May 26 2022 08:19 AM
Thanks, i just tried to put in a support ticket using the link you provided but it seemed to go to a black hole, i didn't get an auto response. One thing I noticed from running my headers through mxtoolbox header analyzer, it passed all dkim, dmarc, spf checks however it did show the sending server has an ipv6 IP showing therefore listing it on a blacklist called CYMRU BOGONS IPv6. Has anyone else seen this if you run the headers through mxtoolbox? It looks like all 3 of the tests i sent from 3 different Microsoft O365 tenants show this blacklist when running the headers through through mxtoolboxes header analyzer.
May 26 2022 09:52 AM
May 26 2022 02:57 PM
May 30 2022 12:07 PM - edited Jun 03 2022 04:47 AM
Hello, yahoo635. Here is a quick solution for such cases:
Go to Yahoo Mail and your account and check the folder with the name "Spam". Hit on the email wrongly marked by Yahoo as junk and open it.
Check it with the "Not Spam" button, and this will send the email back to the inbox. The sender is verified and will never be treated as a spammer in your mailbox.
Still, if you use the account for work, I would recommend better using Microsoft 365 Outlook + NAKIVO backup for Microsoft Office 365 to boost your organization's data safety and recoverability.
May 30 2022 01:15 PM
May 31 2022 08:44 AM - edited May 31 2022 08:45 AM
As a reminder, please refrain from posting third-party links.
Office 365 Community Manager and
Tech Community Admin
May 31 2022 04:26 PM
@yahoo635 Adding my voice to the thread as we have the same issue. Interestingly, my wife and I both work at the same company but her free version of Yahoo mail receives work O365 emails fine, but my Yahoo Plus flags them all as spam.
This has only started happening recently, but when I run a recent spam email and an older non-spam email through 'mxtoolbox.com' they both get flagged as failing the 'SPF Authenticated' section due to a null DNS lookup.
Jun 02 2022 07:30 AM
Jun 02 2022 07:54 AM
What we ended up doing is using a third party spam service we have as a smart host and that puts the messages back in inbox.
Jun 02 2022 08:57 AM
@dketterer1 Yes, same here: Yahoo delivered to inbox. Progress!
I mentioned previously that my wife's free Yahoo email worked, but that wasn't 100% true: it delivered the message to the inbox but when she opened it, it was flagged as spam but said it delivered it anyway as I was a known contact.
Jun 03 2022 07:25 AM
I've been having this issue as well. I've tested with a friend that uses Yahoo and my own yahoo account. Happened as of a few minutes ago—my secondary domain was moved from Google Workplace and it's now happening with that one too (well, it's going to the inbox since it has a history with my friend, but it's still being flagged as spam for him; just not put in the spam folder).