Email Authentication

grab.com

SPF

pass
Declares which servers may send mail for this domain.
v=spf1 ip4:160.34.47.16/28 include:_s0.grab.com exists:%{i}._spf.mta.salesforce.com include:_netblocks.google.com include:_netblocks2.google.com include:_netblocks3.google.com include:spf_c.oraclecloud.com ~all

DKIM

fail
Cryptographic signature on outbound mail (selector: default).
v=spf1 -all

DMARC

pass
Tells receivers what to do with mail that fails SPF/DKIM. Policy: quarantine.
v=DMARC1; p=quarantine; pct=100; rua=mailto:re+yzqj1dlqsgd@dmarc.postmarkapp.com; sp=quarantine; aspf=r;

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