WordPress.com’s email-authentication guidance explains SPF, DKIM and DMARC and notes that domains using external DNS providers need the required records configured there. The authoritative DNS location matters; editing an inactive copy of a zone will not repair live delivery.
Map the business addresses
List the mailboxes, aliases and shared addresses the business uses, including those published on forms, invoices and contact pages. Identify the intended recipient and response owner for each. Do not assume an address exists merely because it appears on the website.
Before changing routing, verify that the destination accounts and intended aliases are ready and that the migration plan preserves the records the business needs. Keep the existing configuration and a recovery plan available. Account cancellation should not be used as a substitute for checking migration completion.
Check each direction independently
Use a labeled, non-sensitive test to a business address from an appropriate external account, then confirm receipt in the intended mailbox. Test a reply from the authorized business identity and inspect delivery and authentication evidence. Record the test time and result.
Test website-generated messages separately, such as an inquiry notification. They may use a different sending service from staff email. Ask the provider or administrator to verify the applicable authentication records without replacing another authorized sender’s settings blindly.
Retain evidence of the result
Distinguish a message accepted for sending from a message confirmed in the recipient’s inbox. Record any bounce or authentication problem accurately. Avoid declaring a provider migration successful from one working message while an important shared address remains untested.
A useful migration review ends with an address list and a result for every route. Assign unresolved failures to the responsible administrator and retest after correction. The business should know where a customer’s message goes and which identity sends the reply before it treats the move as complete.