Email Authentication
openweathermap.org
SPF
passDeclares which servers may send mail for this domain.
v=spf1 include:_spf.google.com include:_spf.salesforce.com include:servers.mcsv.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: reject.
v=DMARC1; p=reject; rua=mailto:dmarc@openweathermap.org; pct=100; adkim=s; aspf=s
Mail Servers (MX)
10 aspmx.l.google.com
20 alt1.aspmx.l.google.com
30 alt2.aspmx.l.google.com
40 aspmx1.googlemail.com
40 aspmx2.googlemail.com
50 aspmx3.googlemail.com