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
    2024-03-15T14:12:51+00:00

    yes support case to the provider. for hotmail this would be hotmail support. You can find their support options here: https://support.microsoft.com/en-us/office/how-to-get-support-for-outlook-com-f5482a98-616c-4d44-b7c5-8aaaadf5c11a They can help you configure the correct settings. Not all free services offer dkim. They can tell you what upgrade you might need for this or you would need to use a provider that offers dkim.

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  2. Anonymous
    2024-03-15T13:03:23+00:00

    Thank you for your reply, but a support case where? Hotmail is Outlook. To Microsoft? I didn't think it was a me issue only.

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  3. Anonymous
    2024-03-15T12:57:39+00:00

    the sender refers to the smtp server in that specific message, which is hotmail. The return for too many recipients has a different code

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  4. Anonymous
    2024-03-15T12:54:37+00:00

    make a support case. See if they can help you setup dkim or let you know if it's not available. This message is simply saying that hotmail is sending too many emails not to have dkim enabled.

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  5. Anonymous
    2024-03-15T12:50:30+00:00

    The issue is dns related, but in the cases of custom domain names you have to manage the DNS manually. There is an option to have O365 manage dns but that is another topic. For free service providers, you must configure the services for dmarc and dkim or reach out to support if you don't have those options. Once these options are enabled, the free email providers will update their dns. It will take 24-48 hours to update and propagate on free providers. At the end of the day, the emails are rejected because or missing or misconfigured DMARC, DKIM, or SPF records. If all three were configured correct then the email will not be rejected.

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