Email Authentication
ad-contents.jp
SPF
passDeclares which servers may send mail for this domain.
v=spf1 ip4:52.199.227.187 -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 mailforward.dnsv.jp