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Remote Server returned '550-5.7.26 This message does not have authentication information or fails to 550-5.7.26 pass authentication checks (SPF or DKIM).

Anonymous
2022-08-02T05:32:46+00:00

Split from this thread.

We are having same issue with our organization, we have all the record setup properly (SPF/DKIM/DMARC). It is happening with Gmail as well as organization using gsuite. It's giving error that one of the IP from microsoft is not allowed in SPF although we have "include:spf.protection.outlook.com" in or SPF record.

Outlook | Windows | Classic Outlook for Windows | For home

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  1. Anonymous
    2022-11-08T12:34:52+00:00

    I have the same: The MAIL FROM

        domain [*.nl] has an SPF record with a hard fail 550-5.7.26 policy(-all) but it fails to pass SPF checks with the ip: 550-5.7.26 [80.84.249.231].

    My domain TXT record is bog standard:

    "v=spf1 include:spf.protection.outlook.com -all"

    It would be nice if Microsoft and Google can make sure that mail between their respective mail services can be delivered properly.

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  2. Anonymous
    2022-09-02T19:23:46+00:00

    Has there been any resolution to this? I'm seeing one or two of my client domains reporting the same issue--with the rejections coming from gmail, or google workspace accounts

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  3. Anonymous
    2022-08-02T07:58:16+00:00

    Dear Karn_n,

    Good day!

    Thank you for posting to Microsoft Community. We are happy to help you.

    I understand that you are getting a Non Delivery Report when sending emails to Gmail users.

    To investigate this situation, we need more information from your side.

    Please provide the following:

    1. Please provide the extended message trace

    Run a message trace and view the results in the Exchange admin center in Exchange Online | Microsoft Docs

    1. Please provide the message header

    View internet message headers in Outlook (microsoft.com)

    Please share these information via Private Message,

    Please understand that these questions will help troubleshoot your situation, we will ask for your patience while working on it.

    We look forward to your response for further assistance. Thanks for your cooperation.

    Sincerely.

    Mac | Microsoft Community Moderator

    ***Note: In the event that you're unable to reply to this thread, please ensure that your Email address is verified in the Community Website by clicking on Your Account Name > "My Profile" > "Edit Profile" > Add your Email Address > tick "Receive email notifications" checkbox > click on "Save".***

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  5. Anonymous
    2022-08-02T13:56:12+00:00

    Sorry i cannot access private chat link, can you please resend me?

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