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Before you connect your custom domain to a Refined site, it needs to be set up in your domain’s DNS configuration. Add a CNAME record and map it to custom.domain.refined.site. Use this exact string — don't replace custom.domain with any other text.
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Step 2:
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Add the custom domain
Go to the Refined Administration.
Click Sites in the left-hand menu.
Select the site.
Go to the Configuration tab.
Click the Edit General Settings button.
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Fill in the custom domain.
Click the Save changes button.
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