The URL for the CRL distribution point uses the name crl.corp.contoso.com.
Create a DNS Host (A) record on DC1 so that this name resolves to the IPv4 address of APP1.
Note: DC1 as Server Name.
To create a DNS record for crl.corp.contoso.com on DC1
1.On DC1, click Start, point to Administrative Tools, and then click DNS.
2.In the DNS Manager console, expand DC1 and then expand Forward Lookup Zones. Right-click corp.contoso.com and click New Host (A or AAAA).
3.In the New Host dialog box, type CRL in Name (uses parent domain name if blank). In IP address, type 10.0.0.3. Click Add Host.
4.In the DNS dialog box informing you that the record was created, click OK.
5.Click Done in the New Host dialog box.
6.Close the DNS Manager console.