AWeber email authentication
One of the oldest autoresponder platforms still in wide use.
SPF record
Add AWeber to your domain's SPF record with this include:
include:aweber.com
A complete record for a domain sending only through AWeber:
v=spf1 include:aweber.com ~all
What it costs you
6 of your 10 DNS lookups. The include: itself costs one, and AWeber's record chains to 5 more.
Behind it are 62 IP ranges.
Live record
This is what aweber.com published when this page was generated:
v=spf1 ip4:204.194.222.0/23 ip4:216.185.208.0/22 ip4:44.216.102.174 ip4:52.4.24.201 include:mail.zendesk.com include:sendgrid.net include:_spf.google.com include:stspg-customer.com ~all
DKIM
Enable DKIM inside AWeber and publish the selector record it generates. DKIM matters more than SPF for deliverability, because a DKIM signature survives forwarding while SPF does not — see how selectors work.
DMARC
Neither SPF nor DKIM protects the address your recipients actually see until DMARC ties them
to it. Once AWeber is authenticating, publish a DMARC record — start at
p=none with a reporting address and
tighten from there.
Check it worked
DNS changes take minutes to hours to propagate. Once published, run the domain through the checker — it resolves the full include chain and reports the real lookup count.