Why can't I send email from Outlook (microsoft account) to a Yahoo or AT&T email account?

Anonymous
2024-01-16T21:00:39+00:00

For years, I have been sending emails from Outlook on my desktop computer and mobile device with no problems. But the last few days, I am getting rejection messages saying my emails cannot make it through. Can I get help figuring out what is going on?

Here is the undeliverable error message I got when trying to send to an att.com email address (came from here: Mail Delivery Subsystem <******@xxxxx.prodigy.net>):

"The original message was received at Tue, 16 Jan 2024 12:28:35 -0800 from mail-mw2nam12on2049.outbound.protection.outlook.com [40.107.244.49] ----- The following addresses had permanent fatal errors ----- (reason: 554 [RL02] Message content not accepted for policy reasons; see https://postmaster.yahooinc.com/error-codes) ----- Transcript of session follows ----- ... while talking to mx-sbc.mail.am0.yahoodns.net.: >>> DATA <<< 554 [RL02] Message content not accepted for policy reasons; see https://postmaster.yahooinc.com/error-codes 554 5.0.0 Service unavailable"

And here is the undeliverable error message I got multiple times when trying to send to a yahoo.com email address (came from: Microsoft Outlook <******@xxxxxxx.com>):

"Delivery has failed to these recipients or groups:

(******@yahoo.com)
Your message couldn't be delivered. Despite repeated attempts to contact the recipient's email system it didn't respond.

Contact the recipient by some other means (by phone, for example) and ask them to tell their email admin that it appears that their email system isn't accepting connection requests from your 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 more information and tips to fix this issue see this article: https://go.microsoft.com/fwlink/?LinkId=389361.

Thank you for help.

Outlook | Windows | New Outlook for Windows | For home

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  1. Ron-6928 4,991 Reputation points
    2024-03-18T21:02:06+00:00

    If you use your own domain name and it's missing necessary DNS records (SPF/DMARC/DKIM), you are the solution. When are you going to fix it?

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  2. Anonymous
    2024-03-19T20:58:10+00:00

    We have the same issue with both @yahoo.com and @aol.com

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  3. Anonymous
    2024-03-26T14:46:11+00:00

    Dear Alan,

    Thank you for posting this case in Microsoft Community! We are glad to assist.

    I did some research on the issue and found there is an SI incident which may cause this issue. Please refer to the information below:

    EX703958

    Title: Some users may be unable to send or receive email messages and receive a Non-Delivery Report (NDR)

    User impact: Users may be unable to send or receive email messages and receive a NDR with a 550 or 554 error code.

    More info: This issue only occurs if either the sender or user who is receiving the message is utilizing a specific third-party anti-spam service. Senders receive the NDR which states that the message has been rejected due to a 550 or 554 error code and that their host IP address is listed on the third-party anti-spam service. The error messages state "550 5.7.350 Remote server returned message detected as spam", "554 5.7.1 Service unavailable; Client host [xxx.xxx.xxx.xxx] blocked", or "‎550 5.7.1 This email was rejected because it violates our security policy."

    Current status: We're continuing to work in conjunction with the third-party service to delist IP addresses which are blocked on the third-party's anti-spam service, In parallel, we're continuing to develop the anti-spam optimizations for long-term mitigation, which we'll provide a timeline for deployment to the affected environment when available. Scope of impact: This issue may affect any user's mail flow if the recipient is leveraging a specific third-party anti-spam service to filter email messages.

    Next update by: Thursday, January 18, 2024 at 7:30 AM GMT+8

    Users can view current information and updates on the Service's health dashboard at the link here https://portal.office.com/servicestatus.

     

    In order for affected customers to easily identify the information here, this topic will be closed. You can click "I have the same question" in this topic or refer to SHD for up-to-date information. I'll also post back here once the issue is resolved in SHD.

     

    Your understanding and patience will be appreciated.

    Thank you!

    Sincerely,

    Sherry | Microsoft Community Moderator

    Hi Sherry,

    I am not sure that you are robot or something. I think that we want to solve the problem, and now I have to understand it, and another search for the solution as you mentioned.

    Adrian

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  4. Anonymous
    2024-03-31T17:15:58+00:00

    I can't send from Microsoft outlook email to Yahoo.... Help

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