Hi Audrey - email@example.com
is probably the best email address to use.
In this instance I knew what was happening but of course with the forums down there was little that I could do to let everyone know.
The software update had been scheduled for early Saturday morning for the least disruption - but it went wrong. The guys handling this for us are in the US, so although I was in email contact with them, I basically had to wait for them to sort it out, and they did eventually.