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Switching web hosts: what actually happens to DNS, TTL, email and SSL during the move (and how to avoid downtime)

Switching web hosts: what actually happens to DNS, TTL, email and SSL during the move (and how to avoid downtime)

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10 min read
Incident note: DNS SERVFAIL: find the cause (DNSSEC & more)

Incident note: DNS SERVFAIL: find the cause (DNSSEC & more)

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2 min read
SPF Record Builder: How to Create an SPF Record by Hand (Without Breaking Your Mail)

SPF Record Builder: How to Create an SPF Record by Hand (Without Breaking Your Mail)

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6 min read
How to claim your business on ChatGPT (Business Hub)

How to claim your business on ChatGPT (Business Hub)

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6 min read
Property Mail Exchange Setup: Recovering Provider Records During DNS Propagation

Property Mail Exchange Setup: Recovering Provider Records During DNS Propagation

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7 min read
Mail Authentication Provisioning: DNS Record Upsert and the Cutover Evidence Budget

Mail Authentication Provisioning: DNS Record Upsert and the Cutover Evidence Budget

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8 min read
Node.js Sending Domain Health Checks With 2 Metrics for Commerce MX Cutovers

Node.js Sending Domain Health Checks With 2 Metrics for Commerce MX Cutovers

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9 min read
Custom Domain DNS: Tenant Records Over Wildcards for Storefront Mail Evidence

Custom Domain DNS: Tenant Records Over Wildcards for Storefront Mail Evidence

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6 min read
How to fix "SPF permerror: too many DNS lookups"

How to fix "SPF permerror: too many DNS lookups"

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2 min read
School Domain Activation: 3 Customer Checks for Apex and www Support

School Domain Activation: 3 Customer Checks for Apex and www Support

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8 min read
Gaming DNS Zone: How to Gate 3 Brands With Many Hostnames

Gaming DNS Zone: How to Gate 3 Brands With Many Hostnames

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9 min read
Checking domain availability, WHOIS and DNS from one API call

Checking domain availability, WHOIS and DNS from one API call

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2 min read
Fintech Domain Offboarding: Mail Evidence Before Deleting Records in Shared Zones

Fintech Domain Offboarding: Mail Evidence Before Deleting Records in Shared Zones

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9 min read
DKIM alignment explained: why SPF and DKIM pass but DMARC still fails

DKIM alignment explained: why SPF and DKIM pass but DMARC still fails

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2 min read
CNAME cloaking changes the meaning of a first-party request

CNAME cloaking changes the meaning of a first-party request

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3 min read
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