Exchange 2010 delay problem

DCS CUSTOMS 1 Reputation point

We have Exchange 2010 SP3 Rollup Pack 22 and we have hybrid structure on servers. Some mails are too delay from outside customer. Example header in the link below. How can i solution? Thank you.

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Lucas Liu-MSFT 6,106 Reputation points

    Do you mean that only email from specific senders will be delay? Or it happens randomly to all senders?
    Did you change any setting of Exchange server before this issue occurred?
    How long will the mail be delayed?
    I click the link you provided, and it will be redirected to a third-party website, I can’t get more information.

    1.When you received the delay email, you could analyze the email headers through ExRCA, and the results will show the specific delays. We can see if the delay occurred before or after reaching Exchange.
    Message Header Analyzer:
    2.You could run the following command to check the process and time of mail transmission in Exchange server.

    Get-MessageTrackingLog -Start "<>" -End "<>" -Sender "<>" -MessageSubject <>  

    For more information: Get-MessageTrackingLog

    In addition, Exchange Server 2010 reached its end of support on October 13, 2020. Please upgrade the Exchange server to a higher version as soon as possible.
    For more information: Exchange 2010 end of support roadmap

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  2. DCS CUSTOMS 1 Reputation point

    We solved the problem. use the tool and change best practise TLS settings.

    Thank you.