As someone else mentioned here, posting unrealistic requirements like "10 years experience with SQL Server 2012" is off-putting to applicants. Don't do it.

I recently saw a job posting at Splunk that did really good work with this. It has since been taken down. Maybe they found the right candidate. Huzzah for them!

Anyway, the posting said something along the lines of "We know no one person can be great at all these things, so if you're pretty good at even half of them, we want to talk to you". I thought that placed a reasonably good amount of balance on the listing. Had I simply seen the listing with all the requirements they had on there I would have laughed. No decent candidate wants to walk into a position that has so many requirements and responsibilities that it sounds like a job for 5 people.