This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
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'
Using Classic Outlook on Windows for personal email, calendar, and contact management
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
the sender refers to the smtp server in that specific message, which is hotmail. The return for too many recipients has a different code
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.
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.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(16, 12%, 11%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ER6%3C/text%3E%3C/svg%3E)
It's a hotmail.fr domain and no one is responsible for the domain name except Microsoft. Good luck contacting them and asking them to add whatever DNS records. It's not your domain name.
FYI
you're teaching someone who does mail administration for a living. I understand you try to help but you're replying to the wrong people (mail admins). Perhaps you know something that I don't. Please explain how you can configure SPF, DMARC, DKIM record for a domain that isn't yours (for example: hotmail.fr)? I'd be happy to learn something new.
The following is what I'm interested to find out so tell us how to configure DMARC and DKIM on Microsoft's domain hotmail.fr?
>> In cases of free email providers, you will need to look up how to configure dmarc and dkim settings on that providers email.