Unable to send emails to Yahoo accounts

Anonymous
2024-03-09T03:41:19+00:00

Starting a couple of days ago, I am unable to send emails to Yahoo accounts from my Outlook email. Here is the error message I receive:

Your message wasn't delivered. Despite repeated attempts to deliver your message, a connection to the remote server was closed abruptly.

Contact the recipient by some other means (by phone, for example) and ask them to tell their email admin that it appears that your email system is unable to connecto their email system. Give them the error details shown below. It's likely that the recipient's email admin is the only one who can fix this problem.

For Email Admins
This often indicates the recipient's firewall SMTP fixup setting or other firewall settings are preventing the SMTP protocol negotiation from succeeding.

For more information and tips to fix this issue see this article: https://go.microsoft.com/fwlink/?LinkId=389361. 

I went to the link suggested, and did not understand the instructions. Please assist. Thank you.

Outlook | Windows | Classic Outlook for Windows | For home

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  1. Anonymous
    2024-03-12T01:20:26+00:00

    We talked to Microsoft support and we had the DKIM entries in the DNS, but it was not enabled in Office365.

    First check your DNS and make sure that you have two CNAME records:

    selector1._domainkey Points to value: selector1-yourdomainname-com._domainkey.yourdomainname.onmicrosoft.com

    selector2._domainkey Points to value: selector2-yourdomainnamecom._domainkey.LoneStarStripes.onmicrosoft.com

    (replace yourdomainname with your actual domain name)

    Then go into Office365.

    Select Admin.

    Select All admin centers

    Select Security

    Select Policies & rules

    Select Threat policies

    Select Email authentication settings

    Select DKIM

    Click on your domain name

    click the slider from Disabled to Enable.

    If this gives you a client Error it will actually give you the exact CNAMES to put into your DNS.

    Select OK.

    Give the DNS records some time to propagate and try turning the slider to Enable.

    Once it is enabled and can see the new CNAMES it will stay on Enabled.

    Select close.

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  2. Ron-6928 4,991 Reputation points
    2024-03-11T22:50:01+00:00

    FYI

    I'm seeing 3 IP addresses in that range (67.195.228.*) from my custom domain to Yahoo that gets deferred. They're successfully delivered in less than 1 hour. It should be instant delivery. Something is going on between Microsoft and Yahoo SMTP servers. I have all 3 DNS records setup since 2019 and never had any issues since then.

    Here's one of the 3 outgoing email from my company domain (hosted on MS 365)

    Reason: [{LED=450 4.4.318 Connection was closed abruptly (SuspiciousRemoteServerError)};{MSG=};{FQDN=mta5.am0.yahoodns.net};{IP=67.195.228.94};{LRT=3/11/2024 10:19:35 PM}]. OutboundProxyTargetIP: 67.195.228.94. OutboundProxyTargetHostName: mta5.am0.yahoodns.net

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  3. Anonymous
    2024-03-11T22:39:22+00:00

    Same thing is happening to me. For three days not. No emails are being delivered to Yahoo and AOL accounts.

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  4. Anonymous
    2024-03-11T21:46:39+00:00

    This solved the issue for me within 5 minutes. I confirmed it by using a test yahoo.com account and 5 minutes after I made the changes emails starting getting through.

    First I went to Go Daddy and added the following CNAME information.

    Then you have to go to https://security.microsoft.com/authentication?viewid=DKIM. Click on your domain and enable the option shown below.

    Once those steps were completed I tested it 5 minutes later and emails were getting through to Yahoo.

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  5. Anonymous
    2024-03-11T21:29:03+00:00

    Same issue here. Multiple clients cannot send to yahoo.com

    It appears to be the yahoo.com mail servers timing out.

    67.195.228.111

    67.195.228.94

    pending to both of the yahoo.com servers at these addresses.

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