We have a corporate Confluence-area, but I am getting e-mail notifications and page edits from individuals that are not part of our organization. A recent example is from this week where I got an email notification that "Suren Raj" had mentioned me on a page, and in the page history "Beejal Nagar" has made 5 edits the past days. Both these persons seem to be Atlassian-employees, so I think there is something wrong?