DNS provider
Add an SPF record in Azure DNS
SPF must be a single TXT starting with v=spf1 at the domain that sends mail. Azure DNS will let you break this with duplicate TXT — don’t.
Provider gotcha: For apex records the name field uses
@. TXT values go in the TXT Records box — one value per line if the UI splits long strings.Reference: SPF DNS.
Step by step
Step 1 Azure Portal → your DNS zone → + Record set.
Step 2 TXT record. For root domain SPF: SPF/DMARC/DKIM names are relative to the zone — e.g.
_dmarc or google._domainkey for a selector..Step 3 Single SPF only — merge vendors into one string:
v=spf1 include:_spf.google.com ~all
Step 4 Save. For apex records the name field uses
@. TXT values go in the TXT Records box — one value per line if the UI splits long strings.Step 5 Propagation: Minutes to about an hour depending on TTL and downstream resolvers.
Step 6 Use DNS Preflight — SPF tree shows lookup count. Link: SPF guide.
DNS Preflight — full auth check for your domain.
Propagation — compare resolvers.
FAQ
Can I add two SPF TXT records?
No — merge into one v=spf1 string or you get PermError.
How does Azure DNS want SPF quoted?
Follow the code block on this page; Route 53 requires quotes around the full TXT.
Why PermError after saving?
Syntax error, duplicate SPF, or over 10 DNS lookups — use Preflight’s SPF tree.
Include SendGrid and Google?
Yes in one record: v=spf1 include:... include:... ~all — watch lookup count.
How long until live?
<strong>Minutes to about an hour</strong> depending on TTL and downstream resolvers.