After you have a registered custom domain, you can use the Custom Domains set up to:
Edit a domain to upload a new SSL certificate, associated private key, and certificate chain (for domains with manual SSL management).
Delete a domain listing.
Verify the domain ownership.
To manage your registered domain:
At the organization level, go to Admin > Setup > Custom Domains.
The Custom Domains Added page appears.
To upload a new SSL certificate, associated private key, and certificate chain:
The Upload files window opens.
Upload the following files in PEM format:
SSL Certificate .
Private key used to sign the SSL certificate .
Chain of certificates. The file should not contain private key so that the file is compatible with the certificate manager requirements.
To delete a domain listing and register a different domain name, click Delete.
The domain gets removed from the list, marked as void and not pending ownership verification.
To verify the ownership of the custom domain that you opted to verify later,
The Add DNS Records section opens.
Click Verify to complete the ownership verification process and activate the domain.
Your domain gets activated.