Email Authentication
labs.google
SPF
passDeclares which servers may send mail for this domain.
v=spf1 -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: reject.
v=DMARC1; p=reject; rua=mailto:mailauth-reports@google.com
Mail Servers (MX)
5 gmr-smtp-in.l.google.com
10 alt1.gmr-smtp-in.l.google.com
20 alt2.gmr-smtp-in.l.google.com
30 alt3.gmr-smtp-in.l.google.com
40 alt4.gmr-smtp-in.l.google.com