<p>Pilot fish gets a message from a user: There's an automated email she's supposed to get every day, and for the past couple days it hasn't shown up.</p><p>"I looked into it," says fish. "I soon realized nobody had been getting certain emails generated by the data warehouse system for the past three days."</p><p>He tests the email procedure from his PC, and discovers it only seems to work under certain combinations of From: and To:. It's definitely not something that's broken on fish's end, so he calls the help desk to open a trouble ticket.</p><p>"They told me to expect calls about this," the help desk tech tells fish. It seems the Exchange team has decommissioned the Lotus Notes server and switched all email to Exchange -- which has some moderately stringent requirements, such as that the From: field must be an actual email address on the system.</p><p><a href="http://blogs.computerworld.com/data-center/21830/what-could-possibly-go-wrong">Keep reading...</a></p>