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This article is for OTC users who receive an error when sending communications or files containing certain kinds of content. These errors may occur in Teams, Email, OneDrive, and other systems or services as added over time.

These errors may look like:

  • ”This message was blocked due to potentially harmful content.”

  • “Your email message conflicts with a policy in your organization. The message wasn’t delivered to all recipients.”

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At OTC, we have DLP Policies in place to prevent the transfer of certain kinds of sensitive information, such as Social Security Numbers and ABA bank routing numbers. These policies may evolve and change over time based on current threat levels or information security events in the general information space. If you are receiving an error such as one of the examples above, something in your message has matched the rules that filters for this information, or is formatted in such a way that it appears to match one of the DLP filter rules.

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These reply only to sending messages or documents containing sensitive information, but not for receiving.

How Do I Communicate Sensitive Information?

You will need to find another way to communicate this information such as:

  • In-Person communication

  • By phone

  • OneDrive File Sharing

OneDrive File Sharing

Onedrive File Sharing is an excellent way to share attachments that contain sensitive information as it requires the recipient to authenticate by being logged into OneDrive to view the document and the permissions can be set to allow a user to either have View-Only or Editing access.

There are multiple ways to share a OneDrive file: https://otchd.atlassian.net/l/cp/HTqnJZzz

You can get started by right clicking the file or folder that you’ve saved to OneDrive, and then selecting “Share”.

In addition, most documents and emails can be printed to PDF on any Windows computer using Microsoft Print to PDF. This is an optional virtual printer available in all Windows 10 and later computers. Then the file can be saved to OneDrive and shared the same way.

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request an exception here.

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If you need further assistance, contact the IT Help Desk.