mail.y.net.ye has one IP number , which also has a corresponding reverse pointer. sah2.ye, sah2.y.net.ye and ye.hrgworldwide.com point to the same IP. y.net.ye is a domain controlled by two nameservers at ye. They are on the same IP network. Incoming mail for y.net.ye is handled by two mailservers on the same IP network. mail.y.net.ye is hosted on a server in Yemen.