Outlook emails not deliverable to yahoo and aol

Anonymous
2024-01-13T17:14:45+00:00

Starting this week, our emails to yahoo and aol accounts are not being delivered, but emails to other email accounts are working. Here is one of the yahoo error message: 1/12/2024 9:27:16 PM - Server at SJ2PR02MB10076.namprd02.prod.outlook.com returned '550 5.4.300 Message expired -> 421 4.4.2 Connection dropped due to SocketError' 1/12/2024 9:26:15 PM - Server at mta5.am0.yahoodns.net (67.195.204.73) returned '421 4.4.2 Connection dropped due to SocketError'

And here is the aol error message: 1/12/2024 9:27:38 PM - Server at PH0PR02MB7367.namprd02.prod.outlook.com returned '550 5.4.300 Message expired -> 421 4.4.2 Connection dropped due to SocketError'
1/12/2024 9:15:15 PM - Server at mx-aol.mail.gm0.yahoodns.net (67.195.204.80) returned '421 4.4.2 Connection dropped due to SocketError'

Outlook | Windows | Classic Outlook for Windows | For home

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  1. Anonymous
    2024-01-30T22:42:00+00:00

    Hello Peeps,

    I had this problem and got help solving. Create a DNS TXT record: v=spf1 include:spf.protection.outlook.com -all

    Instant Gratification.

    Good Luck

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  2. Anonymous
    2024-02-01T19:40:44+00:00

    Please refer to the main thread for the newest update on the issue:

    Outlook emails not deliverable to yahoo and aol - Microsoft Community

    Thanks for your precious time. Have a nice day.

     

    Sincerely,

    Sherry | Microsoft Community Moderator

    Hi Sherry - this is the main thread. Is there any update on this? It's having an extensive impact on our ability to do business.

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  3. Anonymous
    2024-02-01T23:06:52+00:00

    This is correct, it's a DNS setup issue. SPF / DKIM / DMARC are moving to being REQUIRED now.

    Everyone needs to get comfortable with these adjustments on their DNS provider. EX711592 calls this out directly.

    "If your admins have already confirmed that your organization's DKIM, SPF, and DMARC records have been established already, and your users haven't received the error code mentioned below in NDRs, then you can safely ignore this message. "

    There are things behind the scenes being implemented by Google, AOL, Yahoo - and they are a hard requirement now.

    Now then, those 3 things can each be done properly or improperly, which is another troubleshooting issue entirely.

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  4. Ron-6928 4,991 Reputation points
    2024-02-01T23:21:14+00:00

    Yup... I see this today. I don't recall seeing that warning banner until today.

    Details (EX711592)

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  5. Anonymous
    2024-02-06T18:51:07+00:00

    This is driving me crazy our domain uses GoDaddy for dns but in Microsoft 365 there are dns entries as well?

    could this be my issue why I can't send to yahoo aol verizon from a Distibution list that has always worked in the past ?

    I'm at a loss I have no Idea what is going on. this is my godaddy SPF and dmarc but its not working

    TXT @ v=spf1 include:spf.protection.outlook.com -all
    TXT _dmarc v=DMARC1; p=quarantine; rua=mailto:@marlborough-lions.com; ruf=mailto:@marlborough-lions.com; aspf=r

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