Email Authentication

500px.com

SPF

pass
Declares which servers may send mail for this domain.
v=spf1 include:_spf.google.com include:_spf.500px.com include:spf.tipalti.com include:amazonses.com include:sendgrid.net include:mail.zendesk.com ~all

DKIM

fail
Cryptographic signature on outbound mail (selector: default).
_globalsign-domain-verification=95YZs-Lq6mpDrrS5bnsvxSp8Llz8ZsgkwBGGx8RQVh_globalsign-domain-verification=-awtonA3izZim7M9dNMwrH07WjvKC5se353wYCAliP

DMARC

pass
Tells receivers what to do with mail that fails SPF/DKIM. Policy: reject.
v=DMARC1; p=reject; rua=mailto:admin@500px.net

Mail Servers (MX)

10 aspmx.l.google.com
20 alt1.aspmx.l.google.com
30 alt2.aspmx.l.google.com
40 aspmx2.googlemail.com
50 aspmx3.googlemail.com