University-wide mail services will be running a reduced schedule, accepting all mail from both postal zones and sorting; however, deliveries will be made to only a few approved locations on Main Campus. Hospital and clinical operations will not be impacted and will receive normal mail pickup and deliveries during winter break.
That’s exactly how I set up mine, except that ordinarily I’d have several options, like: “If you need help with X, call A. For help with Y, call B. For help with Z, call C. For anything else, call my manager at extension 000.

Given free rein, I’d absolutely love to tell people that needing me to show them how to do X in Excel is actually not a vacation-interrupting emergency and there are tons of free videos that would explain that, if they did not want to contact the actual departments who handle tech support and training. Or that this project they’ve known about for a month but decided to keep under their hat until it became an emergency is something they’ll need to resolve themselves. But that would not fly at all.
Additional resources: You might include a link to one of your webpages or a download if it provides information that can be useful to people while you are away.