Unified DNS Blog

DNS guides, email security tutorials, and MSP operations best practices.

• The Domains Nobody Thinks About Are the Ones Getting Abused
  2026-06-03 · 10 min read
  Parked and inactive domains rarely have SPF, DMARC, DKIM, or CAA records — making them easy targets for email spoofing and phishing. Here are the six DNS records every MSP should deploy on dormant client domains, and why each one matters.
• DNS Cutover Checklist for MSPs: How to Migrate Clients Without Downtime
  2026-05-19 · 14 min read
  A step-by-step DNS cutover checklist for MSPs migrating client domains between registrars or DNS providers: TTL reduction, record auditing, migration window execution, post-cutover verification, and rollback.
• How to Set Up Google Workspace DNS Records: Complete Guide
  2026-04-08 · 10 min read
  A practical, start-to-finish reference for configuring every DNS record Google Workspace requires — all five MX records, SPF, DKIM signing, and DMARC policy.
• Why a Single Expired Domain Took Down a Client for 36 Hours
  2026-03-18 · 8 min read
  During a demo, an MSP owner told us about a domain that expired over the weekend. Nobody caught it until Monday when the client called about email, 36 hours later. Here's what went wrong, why the usual advice doesn't hold up at MSP scale, and how Unified DNS prevents it.
• How to Set Up Microsoft 365 and Intune DNS Records: Complete MSP Guide
  2026-03-15 · 12 min read
  A practical, start-to-finish reference for configuring every DNS record Microsoft 365 and Intune require — MX, Autodiscover, SPF, DKIM, DMARC, SRV, and the difference between enterpriseregistration and enterpriseenrollment.
• Why MSPs Need Multi-Provider DNS Management
  2026-02-05 · 10 min read
  MSPs juggle dozens of client domains across different registrars. Here's why centralized DNS management isn't a luxury anymore - it's a necessity for operational efficiency and security.
• What Is TTL in DNS? Time To Live Explained
  2026-01-14 · 8 min read
  TTL (Time To Live) controls how long DNS records are cached. Learn how TTL works, recommended values for different scenarios, and how to optimize for migrations.
• What Are Nameservers? DNS Delegation Explained
  2026-01-14 · 9 min read
  Nameservers are the servers that host your DNS records and respond to DNS queries. Learn how they work, how to change them, and best practices for MSPs managing client domains.
• What Is DNSSEC? DNS Security Extensions Explained
  2026-01-14 · 10 min read
  DNSSEC adds cryptographic signatures to DNS responses, protecting against cache poisoning and spoofing attacks. Learn how it works and whether you should implement it.
• What Is DNS Propagation? Why DNS Changes Take Time
  2026-01-13 · 9 min read
  DNS propagation is the time it takes for DNS changes to spread across the internet. Learn why it happens, how long it takes, and strategies to minimize delays during migrations.
• What Is a DMARC Record? Email Policy Explained
  2026-01-12 · 10 min read
  DMARC tells receiving mail servers what to do when SPF or DKIM checks fail. Learn how to implement email authentication policies and protect your domains from spoofing.
• What Is a DKIM Record? Email Authentication Explained
  2026-01-11 · 9 min read
  DKIM adds cryptographic signatures to your emails, proving they came from your domain and haven't been tampered with. Learn how it works and how to set it up.
• What Is an SPF Record? Email Security Explained
  2026-01-10 · 9 min read
  SPF records tell receiving mail servers which IP addresses are authorized to send email for your domain. Learn how to prevent spoofing and improve deliverability.
• What Is a PTR Record? Understanding Reverse DNS
  2026-01-07 · 7 min read
  PTR records map IP addresses to hostnames, enabling reverse DNS lookups. Essential for email servers, security, and network diagnostics.
• What Is an NS Record? Understanding DNS Nameservers
  2026-01-06 · 7 min read
  NS records specify which nameservers are authoritative for a domain. Learn how delegation works and best practices for managing nameservers.
• What Is a CAA Record? Controlling SSL Certificate Issuance
  2026-01-06 · 6 min read
  CAA records specify which Certificate Authorities can issue SSL certificates for your domain. Learn how to implement this important security control.
• What Is an SRV Record? Service Location in DNS Explained
  2026-01-05 · 7 min read
  SRV records specify the location of services like SIP, LDAP, and Microsoft protocols. Learn how they work and when MSPs need to configure them.
• What Is a DS Record? DNSSEC Delegation Explained
  2026-01-05 · 8 min read
  DS records are essential for DNSSEC, creating a chain of trust between upper-level and delegated zones. Learn how they work and how to implement DNSSEC.
• What Is a TXT Record? The Versatile DNS Record Explained
  2026-01-04 · 10 min read
  TXT records store text information in DNS for email authentication, domain verification, and more. Learn about SPF, DKIM, DMARC, and other critical uses.
• What Is an MX Record? Complete Guide to Email DNS Configuration
  2026-01-03 · 8 min read
  MX records tell the internet where to deliver email for your domain. Learn how they work, priority settings, and best practices for configuring email DNS.
• What Is a CNAME Record? Understanding DNS Aliases
  2026-01-02 · 7 min read
  CNAME records create aliases that point one domain to another. Learn how they work, their limitations, and when MSPs should use them versus A records.
• What Is an A Record? The Complete Guide to DNS Address Records
  2026-01-01 · 8 min read
  A records are the foundation of DNS, mapping domain names to IPv4 addresses. Learn how they work, when to use them, and best practices for MSPs managing client DNS.