Going on a vacation, feeling under the weather, celebrating the holidays, or just playing hooky from work? If so, you need to let your colleagues, clients, and leads know that you’re not available. There’s nothing worse than waiting for an urgent request, or even a quick and simple response, only to find out the person you’re trying to reach is out of work and completely unable to respond to you.
I wouldn’t be offended or consider saying anything to anyone who included this in their out of office message, but even as someone who is in a religion that forbids use of electronics on most holidays, I still think this message is 1) TMI; 2) doesn’t convey what it needs to convey unless you are explaining that you don’t use electronics during holidays, in which case you can just include that you won’t be checking email without including the religious explanation; 3) would come across to me as inclusion of personal information I don’t need, which would therefore strike an unprofessional tone,and I wouldn’t understand why you felt the need to include that info. How about “I’m out of the office without access to internet or email until (date). If you need assistance before this date, please contact…” Like I said, I think your colleagues are overreacting, but in general I would advise to leave all personal information out of your auto-reply — vacation, medical leave, religious observance, etc. — people do not need to know why you are out.

I do that for most cases. Occasionally I’ll change it to “I’m out of the country and will not have phone or email access.”
Apparently, people receiving such a notification rarely get angry. "The response is basically 99% positive, because everybody says, 'That's a real nice thing, I would love to have that too,'" Daimler spokesman Oliver Wihofszki told BBC Radio 4's Today programme. Holiday envy has been replaced by corporate email policy envy.