Email Authentication
esthe-ranking.jp
SPF
passDeclares which servers may send mail for this domain.
v=spf1 a:www2008.sakura.ne.jp ip4:203.183.110.169 include:_spf.google.com ~all
DKIM
noneCryptographic signature on outbound mail (selector: none).
No record published.
DMARC
noneTells receivers what to do with mail that fails SPF/DKIM.
No record published.
Mail Servers (MX)
10 mail-server.esthe-ranking.jp