DNS & Domain Cutover Checklist

Generate a comprehensive, prioritised checklist for your domain cutover — covering DNS preparation, mail routing, certificates, and post-cutover validation.

Domain Overview

Basic information about your domain estate.

Number of domains to cut over

Is this the primary / vanity domain?

e.g. contoso.com, not contoso.onmicrosoft.com

Email Authentication

SPF, DKIM, and DMARC configuration.

Custom DKIM signing configured?

DMARC record in place?

SPF record configured?

Third-party email filtering (e.g. Mimecast, Proofpoint)?

Infrastructure

Certificates, Autodiscover, and hybrid configuration.

SSL/TLS certificates tied to this domain?

Autodiscover correctly configured?

Hybrid Exchange in use?

Third-party apps depend on this domain?

e.g. SaaS apps using this domain for SSO or email

DNS Readiness

DNS provider and TTL preparation.

DNS provider

TTL already lowered to 300s (5 mins)?