Email Authentication
hatena.ne.jp
SPF
passDeclares which servers may send mail for this domain.
v=spf1 include:_spf.hatena.ne.jp include:_spf.google.com include:mail.zendesk.com include:_spf.salesforce.com include:9008500.spf08.hubspotemail.net -all
DKIM
noneCryptographic signature on outbound mail (selector: none).
No record published.
DMARC
passTells receivers what to do with mail that fails SPF/DKIM. Policy: quarantine.
v=DMARC1; p=quarantine; rua=mailto:dmarc@hatena.ne.jp; ruf=mailto:dmarc@hatena.ne.jp
Mail Servers (MX)
1 aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com
10 alt3.aspmx.l.google.com
10 alt4.aspmx.l.google.com