CNAME records are integral to your custom domain setup. CNAME records for your custom domain are not managed by Files.com, because they are for a domain that you control. You will need both administrator access to your Files.com site, as well as access to your account with the DNS provider for your domain (e.g. GoDaddy, NameCheap, Route 53, etc.) to configure CNAME records.

Configuring Your CNAME Record

Once you have chosen your custom domain, the next step is to set up a CNAME DNS record with your DNS provider. The CNAME record's value will depend on whether your custom domain will use an SSL certificate provided by Files.com or your own SSL certificate.

If you plan to use SSL provided by Files.com, your CNAME record must point at your subdomain address. If you are using your own custom SSL certificate your CNAME will point to an address that contains your subdomain name in the form s-[subdomain].di.app.files.com.

We recommend using the shortest allowable TTL value for your CNAME record, such as 60 seconds. The DNS performance increase provided by large TTL values (many systems will default to 14400 seconds, or even 86400 seconds) is negligible compared to the risk of waiting hours or days for addresses to propagate.