2005-12-15 ■ http://pocketstudio.jp/linux/?MTA%2FAntiSPAM%2FSender%20ID%20%A4%F2%C6%B3%C6%FE%A4%B7%A4%C6%A4%DF%A4%EB http://k-tai.impress.co.jp/cda/article/news_toppage/26995.html