창고
http://webdir.tistory.com/165
http://wnstjqdl.tistory.com/entry/%EB%A6%AC%EB%88%85%EC%8A%A4-sendmail-%EC%84%A4%EC%B9%98-%EB%B0%8F-%EC%84%A4%EC%A0%95 http://webdir.tistory.com/165