My colleague does that just for holidays.. it does say who else to contact, but tbh if I’m emailing him a couple of days before he’s due to return then I’m not massively impressed at the insinuation I should take the action of remembering to resend it… in reality I think he probably does read *some* emails but clearly views the OOO as a way to absolve responsibility if he misses something..
She, if I recall, had a few comments from people when she got back regarding her words (she was on annual leave on holiday, it wasn’t a family emergency or anything that might excuse the tone). It rubbed quite a few people up the wrong way (most of them parents themselves!). Don’t recall more of an outcome though, I wasn’t at that firm long.

“The world is serious enough as it is - people need, and usually appreciate, an unexpected moment of levity in their day,” he says, when quizzed about how recipients might respond to such an OOO. He also confides that he himself has dispensed with auto responses altogether – though not for idealistic reasons. “The last time I tried to set one up, I botched it so badly that somehow it resent every single email in my outbox from the previous year - client emails, firing notices, literally thousands of emails.”
3) I am out of the office from mm/dd to mm/dd and will not be checking email. It’s likely your note will be swallowed in a sea of inbox banality, never to be seen again. If you require a response, please re-send your email after mm/dd.