Tagged: DNS
DNS & DomainsDNS changes that affect email routing can cause mail to bounce or be delivered inconsistently if you're not careful. Learn the right sequence — TTL reduction, staged MX changes, and authentication record management — to cut over without downtime.
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DNS & DomainsMX records are what tell the internet where to deliver email for your domain. Get them wrong and you lose mail silently. This guide explains how MX records work, how priority values function, and the mistakes that cause delivery failures.
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Email HostingEmail hosting migrations fail when the sequence is wrong — old MX records left in DNS, SPF not updated, staff still using old settings. This checklist walks through every phase from preparation to post-migration verification so nothing slips through.
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Email AuthenticationSPF records authorize which IP addresses can send email from your domain — but they break in specific ways that are easy to miss. The 10-lookup limit, duplicate record conflicts, and forgotten sending services are the most common culprits behind SPF failures.
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Email AuthenticationDKIM key rotation limits your exposure if a signing key is ever compromised — but doing it wrong breaks email authentication in transit. This guide covers the safe rotation sequence, including why you must keep the old public key in DNS for 48–72 hours after switching.
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Email AuthenticationDKIM adds a cryptographic signature to every outbound message, letting receiving servers verify the email actually came from your domain. Here's how to set it up correctly and fix the failures that quietly hurt delivery.
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Email AuthenticationDMARC tells receiving mail servers what to do when SPF or DKIM checks fail — and sends you daily reports showing who is sending email using your domain. Here's how to deploy it without breaking legitimate mail.
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Email AuthenticationSPF tells receiving mail servers which IP addresses are authorized to send email for your domain. Getting it wrong breaks delivery. Getting it right is the foundation of email authentication — here's how to do it correctly.
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DNS & DomainsBackup MX records used to be standard advice, but a poorly maintained one can do more harm than good. Here's when you actually need one and how to configure it safely.
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