Email security & deliverability · grade A
v=spf1 mx include:_a.runnet.jp include:_b.runnet.jp include:_a.pre3.runnet.jp include:_spf.cas12.runnet.jp ip4:54.238.144.233 ip4:54.238.159.40 ip4:210.190.116.0/25 include:amazonses.com ~all