Users are either confused or annoyed by this red alert, even though it is benign.
We had put in an enhancement request to at least make it a "green" alert ("green" good, "red" bad).
Ross Brown at NKU suggested:
Try editing or removing the text from the language pack. I think this
is in content.properties.
So I copied the Language Pack for en_US, started the Language Pack editor, searched for the string "The content below is outside", and found the entry in the content.properties.
I changed it from
content.wrapper.link.external.warning=The content below is outside of the Blackboard Learn environment.
content.wrapper.link.external.warning=<div class="receipt good">The content below is outside of the Blackboard Learn environment.</div>
And then I tried blanking out content.wrapper.link.external.warning.
In 9.1SP7, I found that the message is now tagged as
which has a blueish gray color