Email Authentication

alistapart.com

SPF

warning
Declares which servers may send mail for this domain.
v=spf1 ip4:216.243.141.0/24 mx ptr include:aspmx.googlemail.com include:_spf.google.com include:spf.mandrillapp.com ?all

DKIM

none
Cryptographic signature on outbound mail (selector: none).
No record published.

DMARC

warning
Tells receivers what to do with mail that fails SPF/DKIM. Policy: none.
v=DMARC1; p=none;

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