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  • DLP Restrictions on Sharing Sensitive Data through LETU Email
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As part of protecting your sensitive data, LETU Email will block emails from being shared with others if it detects sensitive content such as Social Security Numbers, Credit Card numbers or other data as detailed in Data Loss Prevention (DLP) in the body or attachments .

If this occurs, you will receive a notice that your email has not been delivered to the intended recipient as below:

From: Postmaster <Postmaster@letu.edu>
Sent: Wednesday, January 1, 2020 8:00 AM
To: Smith, Jane <janesmith@letu.edu>
Subject: Message Blocked: Credit card number


Your email message conflicts with a policy in your organization. The message wasn't delivered to all recipients. Issues:

  • Message contains the following sensitive information: Credit Card Number


Blocked Message Details
Created Date: 01/01/2020 8:00:00 AM
Sender Address: janesmith@letu.edu
Blocked Recipient Address: johnsmith@letu.edu
Subject: Credit card number

Message is attached.


The workaround for this issue is to remove any sensitive information from the email or any attachments and re-send it.

As with all automated systems, this detection may occasionally produce a false positive. Such occurrences should be rare - however when they occur the email may not be able to be sent until the data that is incorrectly flagged as sensitive is identified and removed or re-worded. Please contact the information Technology Helpdesk if you are encountering a sensitive data block and cannot identify the information in the file that is triggering the block.

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