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<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "Article",
"headline": "How to audit DNS for marketing sites",
"description": "A practical checklist for SPF, DKIM, DMARC and TTL before a campaign launch.",
"author": {
"@type": "Organization",
"name": "NexaMarTech"
},
"url": "https://nexamartech.com/blog/dns-audit",
"datePublished": "2026-09-01"
}
</script>