Red Sift OnDMARC

Dynamic SPF management for enterprise email authentication

Automated SPF flattening breaks through the 10-lookup limit and keeps email flowing without manual SPF record updates or compatibility risks.

SPF graphic
Red Sift OnDMARC

Dynamic SPF management for enterprise email authentication

SPF graphic

Automated SPF flattening breaks through the 10-lookup limit and keeps email flowing without manual SPF record updates or compatibility risks.

THE PROBLEM
When SPF breaks at scale, deliverability suffers

SPF (Sender Policy Framework) records control which systems are allowed to send email for your domain. But as email ecosystems grow more complex, SPF becomes increasingly fragile, turning routine changes into delivery risks.

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SPF lookup limit blocks legitimate email

Each email service you add increases DNS lookups in your SPF record. Once the 10-lookup limit is exceeded, authentication can fail, causing legitimate mail to be rejected or sent to spam.

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One error breaks everything

Static SPF records become outdated as vendors change infrastructure. A single stale entry can invalidate SPF checks and disrupt email delivery.

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Common workarounds cause risk

Some solutions use "macros" to get around the limit, but most older email systems don't support them. This creates compatibility issues with email gateways and can cause failures.

Learn more about Sender Policy Framework
THE SOLUTION
Dynamic SPF solves it differently

Automatically stays current and keeps email flowing

Updates happen at the moment of authentication, so your records are always accurate. If a temporary error occurs, Dynamic SPF uses the last working configuration to keep email moving until it resolves.

Works with all email systems

Designed to work across modern and legacy email infrastructure worldwide, without issues in older systems or email gateways.

Manage everything in one place

Dynamic SPF lets you manage and update your SPF record directly in OnDMARC. With a single DNS change, all future SPF updates are handled centrally, without ongoing DNS access, third-party permissions, or fragile workarounds.

Built for reliability

Runs on enterprise-grade Google infrastructure with automatic failover. Even if OnDMARC experiences downtime, Dynamic SPF continues authenticating your email.

WHO IT'S FOR

Built for organizations that depend on email

If your business relies on email across many tools and services, you need authentication that keeps up without constant intervention.

1

Security and IT teams

Enforce DMARC at p=reject without worrying about SPF failures disrupting business operations. Get complete visibility and control over all authorized senders from one interface, with automatic updates that eliminate manual DNS work.

2

Marketing teams

Running campaigns across multiple platforms or managing email through various tools? Dynamic SPF authenticates all your sending services without hitting lookup limits or requiring IT intervention for every new tool you add.

REVIEWS
See what our customers say about Dynamic SPF
Kevin Hopkinson ZoomInfo
Kevin Hopkinson
Head of Deliverability

“Dynamic SPF allows ZoomInfo to overcome the SPF 10 lookup limit so easily. It’s not a macro-based solution, so there are no issues with legacy gateways rejecting our emails."

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Hamish Gough
IT Lead

“Dynamic SPF works so well I just leave it to run and it sorts itself out.”

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Yousef Oujdi Alvarez and Marsal
Youssef Oujdi
Chief Security Officer

"Red Sift's managed SPF solution doesn't require the use of macros making it fully compatible with global email systems, whilst removing the known SPF entry restrictions."

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Martin Tierney
System Administrator

“We’d always struggled with SPF—it was a nightmare to manage manually. Dynamic SPF is a game changer. It removes the complexity around the SPF lookup limit and makes it easy to stay compliant, even as new vendors come on board.”

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Kevin Hopkinson ZoomInfo
Kevin Hopkinson
Head of Deliverability

“Dynamic SPF allows ZoomInfo to overcome the SPF 10 lookup limit so easily. It’s not a macro-based solution, so there are no issues with legacy gateways rejecting our emails."

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