Shin Maruyama Motonori Nakamura Yasuo Okabe Nariyoshi Yamai Kiyohiko Okayama Takuya Miyashita Priority Control in Receiving E-mails by Giving a Separate Response to Each DNS Query. 90-93 2006 conf/saint/2006 SAINT http://doi.ieeecomputersociety.org/10.1109/SAINT.2006.50 db/conf/saint/saint2006.html#MaruyamaNOYOM06