Tagged “comparison”
6 articles
DMARC vs SPF vs DKIM: how they fit together
SPF, DKIM and DMARC are named together so often that they blur into one thing. They are not. This is a clear comparison of what each record actually proves, why SPF and DKIM are blind to the From line your recipients trust, and how DMARC ties them together with alignment and policy.
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Free checkers vs paid DMARC platforms
Free DMARC checkers read the current state of your DNS in one lookup, and they do that job completely. Enforcement is different: getting a domain from p=none to p=reject without dropping legitimate mail is a multi-week process driven by the continuous aggregate-report stream, which no one-shot tool can ever surface. This guide draws the exact line between what free checkers do well, where they structurally stop, and what a managed platform adds, plus an honest account of who needs the paid side and who does not.
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Hosted vs do-it-yourself DMARC
DIY DMARC looks free, but the real cost lives in senior time, the risk of breaking your own mail on the way to enforcement, and the monitoring tail nobody keeps up. Here is how to price hosted versus do-it-yourself honestly, and decide which your domain actually needs.
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MTA-STS vs DANE: which transport security to use
MTA-STS and DANE both stop SMTP downgrade attacks, but they anchor trust in opposite places: the web PKI versus DNSSEC. Here is how their trust models, failure behaviour and deployment burden differ, and a concrete guide to choosing one or running both.
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Relaxed vs strict DMARC alignment
DMARC does not check whether SPF or DKIM passed, it checks alignment. The aspf and adkim tags decide how exact that match must be. Here is when strict alignment is worth it, when relaxed is right, and exactly how the choice reshapes subdomain sending.
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SPF vs Sender ID: a short history
Sender ID was a serious 2000s attempt to authenticate the visible From address, sharing SPF's syntax but checking a different identity. Here is why it faded, what it shared with SPF, and what to do when you find a stale spf2.0/ record in your DNS today.
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