How AutoSPF Works

Fix the SPF 10-DNS-lookup limit in 60 seconds. No maintenance, no manual updates, no stress.

See AutoSPF fix a broken SPF record in under 60 seconds — from login to done.

The Problem: The SPF 10-DNS-Lookup Limit

Sender Policy Framework (SPF) is a DNS record that tells receiving mail servers which IP addresses are authorized to send email on behalf of your domain. Every time you add an email service -- Google Workspace, Salesforce, Mailchimp, HubSpot, Zendesk -- your SPF record grows.

Each include mechanism triggers a DNS lookup, and RFC 7208 imposes a hard limit of 10 DNS lookups per SPF evaluation. Most businesses today use 5 to 15+ third-party email services.

When your SPF record exceeds 10 lookups, it returns a permerror:

Emails fail SPF authentication silently

Your domain becomes vulnerable to spoofing

Email deliverability drops without warning

DMARC alignment breaks, affecting sender reputation

Customers miss invoices and sales follow-ups land in spam

The Solution: Automatic SPF Flattening

AutoSPF eliminates the 10-lookup limit entirely by automatically flattening and compressing all of your included domains into resolved IP addresses, then serving them through a single managed SPF entry.

Resolves all nested includes -- Every include, redirect, and nested SPF mechanism is recursively resolved down to its underlying IP addresses and CIDR ranges.

Replaces your entire SPF record -- A single managed entry that points to AutoSPF, consuming just 1 DNS lookup instead of 10+.

Monitors and rescans every 15 minutes -- When Google, Microsoft, Salesforce, or any provider changes their IP ranges, AutoSPF detects it and updates your record automatically.

De-duplicates overlapping IP ranges -- Providers often share infrastructure; AutoSPF consolidates redundant netblocks to keep your record compact.

Supports macro-based SPF -- For organizations with truly large sender ecosystems, AutoSPF uses SPF macros to support unlimited includes without any lookup limit at all.

The Result: 3 Steps, 60 Seconds

Sign Up & Add Your Domain

Create your AutoSPF account and enter the domain you want to protect. AutoSPF immediately scans your existing SPF record. Takes about 30 seconds.

Replace Your SPF Record

AutoSPF generates a new SPF record. Copy it, go to your DNS provider, and replace your existing SPF TXT record. One copy-paste operation.

Done!

There is no step 3. AutoSPF takes over -- monitoring, flattening, updating, and optimizing your SPF record continuously. You never need to touch it again.

If setup takes longer than 60 seconds, your first year is free.

What Happens Behind the Scenes

Automatic flattening -- All included domains are resolved to IP addresses and compressed

Real-time DNS sync via Cloudflare -- Changes propagate globally within seconds

Continuous monitoring every 15 minutes -- Catches IP range changes as they happen

Automatic updates -- No tickets, no manual changes, no downtime

Netblock de-duplication -- Overlapping CIDR ranges consolidated for efficiency

DMARC alignment maintained -- SPF stays valid and aligned with your DMARC policy

Why AutoSPF Is Different

	AutoSPF	Typical Competitors
Lookup limit	Eliminated via macros	Still limited by chained includes
DNS availability	99.99% SLA via Cloudflare	Varies
Update frequency	Every 15 minutes	Hourly or daily
Security	SOC-2 Type II Report	Rarely certified
Maintenance required	Zero after setup	Periodic manual review
Trusted by	2,000+ businesses	--

Fix Your SPF Record in 60 Seconds

Stop losing emails to a problem that was solved years ago. Replace one DNS record and never think about SPF lookup limits again.

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Rated 5/5 on G2 · Trusted since 2018

Setup in Seconds, Results Forever

"Simple Solution for a Large Problem"

Simple to use and easy to deploy! Moreover, administration and maintenance of our SPF record is super simple.

Glenn G.

Enterprise (> 1000 emp.)

"A very professional service"

The service is simple, easy, and fast and has a straightforward dashboard for updating the data. The team is very kind, and helpful with fast replies. Basically jumping into our help. Top service with top experts!

Mihai K.

Enterprise (> 1000 emp.)

"Robust and useful product with incredible support"

AutoSPF is a simple tool to solve a significant problem. It does it so very well without any issues. Additionally, the support is very professional and goes above and beyond to help resolve any email-related issues for their customers.

Verified User

Insurance · Mid-Market (51-1000 emp.)

Read our reviews on G2