This is what I’ve seen most often in my career. Problem is, the contact is almost always the admin. I’m the admin. Everyone’s idea of assistance is different. Often, I didn’t have the knowledge about the issue in order to be of any assistance. I wound up spending more time running around looking for answers than actually working on what was on my own plate. It’s exhausting. Otherwise known as “please don’t call us for unicorn problems when we handle llamas. Literally, we can’t do anything for unicorn problems.”
That’s right. An out-of-office response is an automated email message that will be sent back to anyone who shoots you an email while you’re on leave. They are important. For starters, you don’t want to appear snobbish, and… you might even get some new leads just by leaving a well-thought-of out-of-office email message.

As with all winter breaks, but especially in a longer break, division and department leaders are responsible for ensuring that external contacts are aware of the closures and as appropriate salaried staff are performing services as necessary to meet the needs of the community during the closure, including checking email/voicemail and responding to time-sensitive matters.
[Company name] office is closed today for the [holiday name] and will reopenam [date]. [Company name] Online and our website is available throughout.