Just came across my auto-reply message from when I was away for a year back in 2012-2013. It made me chuckle.
Hello! And thank you for your message!
Unfortunately, I am not in the office until September 3, 2013. That 2013 is not a typo. I may respond to your email once I return, but I cannot make any guarantees. In the meantime, you may want to contact Xxxx Yyyy (email@example.com) instead.