PTR

mtaproxy1.biz.mail.vip.bf1.yahoo.com

A record for

`mx.wstuniversity.com`
	A	67.195.204.83
`mx-biz.mail.am0.yahoodns.net`
	A	67.195.204.83
	A	67.195.228.75
`mtaproxy1.biz.mail.vip.bf1.yahoo.com`
	A	67.195.204.83

33%	67.195.228.75

Buffalo, New York, 🇺🇸 USA

^{🇺🇸 Yahoo67.195.204.0/24 Verizon Media BF1}