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
    2024-01-29T23:14:55+00:00

    Ron, can you help me? The company that handles my DNS settings cannot seem to get this fixed. My domain is laurahipescpa.com. I can edit my own DNS settings, but I had them change to 1 spf TXT file, add the DMARC file, and add the DKIM file. Is there something else, maybe with the MX file? FYI, GoDaddy has my domain, but the DNS settings are handled by ipage.com who provides my web site.

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  2. Ron-6928 4,991 Reputation points
    2024-01-26T17:10:13+00:00

    You're welcome.

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  3. Anonymous
    2024-01-26T16:58:56+00:00

    Happy Days - happy days :)

    I sent all my research that I obtained using your previous post - to our "guys".. After a little back and forth = the one guy corrected the mistakes = and I can now send to Yahoo.com addresses and Microsoft Outlook is sending delivery receipts!

    lookup.icaan = has no errors now :) .. DMARC/SPF/DKIM are all in check now... WooHoo

    Glorious!

    Thanks a lot Ron!

    (and to everyone else who posted their findings)

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  4. Anonymous
    2024-01-26T16:27:49+00:00

    Martindale.com is my domain host. I finally convinced them that, as Microsoft told me, the required changed needed to be made on the domain host level - the TXT value was corrected and things work now.

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  5. Ron-6928 4,991 Reputation points
    2024-01-26T15:43:58+00:00

    All of the above tools are showing our SPF record as having an "invalid syntax error". It's weird.. the TXT record you show is like ours = However, ours looks like ****outlook.co m -all.

    Notice the space? .co m

    That's the first thing that caught my attention. The TXT record I posted does NOT look like yours at all... well perhaps close enough to human eyes but we all know computers won't treat .com and .co m the same way. Correct your SPF record. If you don't have a DMARC, create one too.

    Read the article I posted yesterday

    https://learn.microsoft.com/en-us/microsoft-365/security/office-365-security/email-authentication-spf-configure?view=o365-worldwide.

    It tells you everything you want to know about SPF, DMARC, DKIM and how to create them.

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