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DMARCGuide

SPF vs DKIM vs DMARC: What MSPs Need to Know

MSPs get asked about SPF, DKIM, and DMARC constantly -- usually the week before a client's insurance renewal. Here's the practical breakdown: what each record does, what it doesn't do, how they work together through DMARC alignment, and how to audit your entire client base before an underwriter does.

DG
Daniel Groves
12 min
02
DMARCGuide

DMARC Check API: How MSPs Query Email Auth Records Programmatically

MxToolbox works for one domain at a time. Here's how to check DMARC, SPF, DKIM, SSL, and open ports programmatically across your entire client base — with working code.

SC
Sarah Chen
10 min read