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Feller's avatar
Feller
Brass Contributor
Feb 25, 2025

554 5.3.4 Content conversion limit(s) exceeded

Could not send mail from PowerBI to local mailbox using SMTP receive connector. There is EventID DELIVERFAIL: "STOREDRV.Deliver.Exception:ConversionFailedException; Failed to process message due to a permanent exception with message The content conversion limit has been exceeded. ConversionFailedException: The content conversion limit has been exceeded. [Stage: PromoteCreateReplay]'" in Transport log.

How/where could I check/set the content conversion limit? Is there some other log, where I can find detailed information about this?

Message size is 1.3MB, maximum message size in connector is 20MB

Exchange 2019 CU 14

Thanks.

  • RyderEvan's avatar
    RyderEvan
    Iron Contributor

    1. Check the size and content of the email: Make sure the size of the email does not exceed the Exchange server's limit (usually 10MB or 25MB).
    Check whether the email content contains a large number of attachments or complex formatting (HTML, embedded images, etc.).
    2. Adjust the email content: Reduce the size or number of email attachments.
    Simplify the email format and avoid using complex HTML or embedded content.
    3. Check Exchange server settings: Open the Exchange Administration Console (EAC) and navigate to “Mail Flow” > “Incoming Connectors”.
    Check the settings of the Incoming Connector to ensure that there are no overly strict content conversion restrictions set.
    4. Use PowerShell to adjust restrictions: Open the Exchange Management Shell (EMS) and run the following command to adjust the content conversion restrictions:
    powershell
    Set-ReceiveConnector -Identity “YourConnectorName” -MaxMessageSize 50MB -MaxRecipientsPerMessage 500
    Replace YourConnectorName with the name of your receiving connector, and MaxMessageSize and MaxRecipientsPerMessage with the desired values.
    5. Check Transport Rules: Open the Exchange Administration Console (EAC) and navigate to “Mail Flow” > “Rules”.
    Check if there are any transport rules restricting email content conversion and adjust or remove the rules if necessary.
    6. Contact Microsoft Support: If none of the above methods work, it is recommended to contact Microsoft support team and provide detailed error messages and logs for further assistance.

    • Feller's avatar
      Feller
      Brass Contributor

      Problem was solved. There were a lot of small embedded images (like icons) inside email body. 

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