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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
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if you are not using DMARC or DKIM, make sure it is not enabled for the onmicrosoft.com domain as I outlined above.
Leave that enabled is ok too.
Hi Jimmy,
I have attached my SPF record below. It is the same as you recommended but I am still not able to send emails to Yahoo customers.
TXT @ v=spf include:secureserver.net -all
TXT @ v=spf1 include:spf.protection.outlook.com -all
Any thoughts?
Thanks!
Delete the "secureserver.net" one, your domain must be with GoDaddy and / or you had their email hosting before. It should no longer be needed.
if you are not using DMARC or DKIM, make sure it is not enabled for the onmicrosoft.com domain as I outlined above.
Leave that enabled is ok too.
It should be OK to leave that enabled, but I had to turn it off before I could send emails to yahoo addresses. I don't see the harm in leaving it off, so that's what I'm going with.
I actually removed v=spf1 include:spf.protection.outlook.com -all and it worked! All my Yahoo customers are receiving their email now.
I do have a Godaddy domain. Thank you. What a relief!