Case Study: Cambium Networks overcomes SPF lookup limits with Red Sift OnDMARC

Cambium Networks overcome the SPF lookup limit with Dynamic SPF

Cambium Networks, a global broadband provider and enterprise Wi‑Fi specialist, needed a better way to manage email authentication across 25 entities and more than 6 million emails per month. Their team was manually maintaining SPF records, running into the 10-lookup limit, and dealing with inconsistent setups and email deliverability issues before using Red Sift’s OnDMARC.

With Red Sift’s OnDMARC and its Dynamic SPF capability, Cambium Networks automated SPF management, gained clear visibility into DMARC/DKIM/SPF status, and moved confidently toward p=reject. The result was 2,000 spoof emails from more than 200 senders blocked in 30 days, a 99.5% email deliverability rate, and full protection against SPF lookup-limit problems while reducing manual effort and shadow IT risk.

Cambium Networks

Hamish Gough

DevOps Lead