To create canonical name records for a Communications Web Access server

1. Log on to the DNS Server as a member of the Domain Administrators group.
   
   
2. In the DNS snap-in, expand the name of the DNS server, expand Forward Lookup Zones, right-click the name of your domain, and then click New Alias (CNAME).
   
   
3. In the New Resource Recorddialog box enter the first alias for the Communicator Web Access server. This first alias is as.followed by the fully qualified domain name (FQDN) of the server. For example, if your Communicator Web Access server has the FQDN cwa.litwareinc.com then the alias would be as.cwa.litwareinc.com.
   
   
4. Make sure that the fully qualified domain name (FQDN) for the alias (for example, cwa.litwareinc.com) has been entered into the Fully qualified domain namebox.
   
   
5. In the Fully qualified domain name (FQDN) for target hostbox type the FQDN for the server itself (for example, cwa.litwareinc.com), and then click OK.
   
   
6. Right-click the name of your domain a second time and then click New Alias (CNAME).
   
   
7. In the New Resource Recorddialog box, type the next alias for the Communicator Web Access server. The second alias is download.followed by the FQDN of the server. For example, if your Communicator Web Access server has the FQDN cwa.litwareinc.com then the alias would be   download.cwa.litwareinc.com.
   
   
8. Make sure that the fully qualified domain name (FQDN) for the alias (for example, download.cwa.litwareinc.com) has been entered into the Fully qualified domain namebox.
   
   
9. In the Fully qualified domain name (FQDN) for target hostbox type the FQDN for the server itself (for example, cwa.litwareinc.com), and then click OK.