Create me a robots.txt file to delay crawlers from pinterest and optimise my server

Pinterest crawlers have brought my dedicated server to its knees with crawling it I don't want to block the crawlers because i will be penalised i want someone to make a [login to view URL] file with a crawl delay witch will let my traffic threw as well as pinterest been able to crawl. So that means you will have to copy the [login to view URL] file in to the cpanel root directory of every cpanel and then i want you to copy it to every addon domain folder. This can be accomplished in bulk instead of doing it manually