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
    2024-03-11T01:09:25+00:00

    Thanks Brad. How do I get of this tread?

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  2. Anonymous
    2024-03-11T01:08:40+00:00

    Hi!

    like everyone else, I had this issue back in January and was fixed by adding the following txt record: v=spf1 include:spf.protection.outlook.com -all.

    However, the issue is back. any emails that I send to Yahoo, AOL or Verizon don't reach them. emails to gmail due work fine.

    my domain is barkinstyledc.com.

    any ideas????

    The records look correct. You too might need to look into getting a DMARC record published (find Ron's instructions on page 7). I have not had any reports of issues from my clients that don't have DMARC records, but if I do, I will post back here as well.

    Also, you can check to make sure an incorrect DKIM signature is not being applied, here is a copy and paste of what I had to change for one of my clients (not saying for sure this applies to you, but it is worth checking and changing if you find these settings) -

    Double check that your domain is the default domain in the M365 admin center. If the onmicrosoft.com domain is default, switch it.

    Several of my clients had an issue where Microsoft had DKIM enabled for the OnMicrosoft.com domain. Go into M365 Security Admin Center, Under "Email and Collaboration", click on "Policies and rules", Threat Policies, Email Authentication Settings, DKIM Tab -

    The Clients with the issue had DKIM enabled on the OnMicrosoft domain, so if it is enabled on your OnMicrosoft domain, disable it / turn it off. You'll have to wait 30-60 minutes for this change, then re-test.

    -Brad

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  3. Anonymous
    2024-03-11T01:03:02+00:00

    I have been fighting this for 3 months now I have a ticket with Microsoft they keep telling me the second levell

    Is working on this my DNS is with go daddy but I use Microsoft 365 I know there are some DNS on both sites

    My domain is marlborough-lions.com

    Thi is so frustrating

    Everything looks correct. SPF, MX, DMARC, all check out.

    Double check that your domain is the default domain in the M365 admin center. If the onmicrosoft.com domain is default, switch it.

    Several of my clients had an issue where Microsoft had DKIM enabled for the OnMicrosoft.com domain. Go into M365 Security Admin Center, Under "Email and Collaboration", click on "Policies and rules", Threat Policies, Email Authentication Settings, DKIM Tab -

    The Clients with the issue had DKIM enabled on the OnMicrosoft domain, so if it is enabled on your OnMicrosoft domain, disable it / turn it off. You'll have to wait 30-60 minutes for this change, then re-test. If emails still bounce back, post the bounce back message.

    -Brad

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  5. Anonymous
    2024-03-11T01:01:55+00:00

    If you are sending from an aol account, then this thread does not apply to you.

    -Brad

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