Mappings (5)
Mapping records determine where domains (and subdomains) route to. A and AAAA records map to IPv4 and IPv6 addresses. CNAME and PTR records map to other domains.
Type
Domain
Destination(s)
CNAME
dnsdigest.com
→
dnsdigest.fly.dev
📄
This is a root CNAME record for the web app. Cloudflare supports root CNAME records (they get resolved as A and AAAA records).
CNAME
_acme-challenge.dnsdigest.com
→
dnsdigest.com.p3d699.flydns.net
📄
Required by our hosting service fly.io to prove we own the domain.
CNAME
heymail._domainkey.dnsdigest.com
→
heymail._domainkey.hey.com
📄
DKIM record used by Hey!, the email service we use to receive and manually send email.
CNAME
pm-bounces.dnsdigest.com
→
pm.mtasv.net
📄
We use Postmark for programmatic outbound email (password resets, etc.). This sets up the SPF record used on Postmark's end because emails sent out from Postmark will have a Return-Path address of "pm-bounces.dnsdigest.com" for SPF alignment.
CNAME
www.dnsdigest.com
→
dnsdigest.fly.dev
📄
Resolves www.dnsdigest.com to the same place as dnsdigest.com.