When you really get to know the advanced functions in Microsoft Excel, one function that you will no doubt begin to use frequently is the IF function. In automating your calculations and data manipulation, the IF function will give you some of the same features that professional developers often use to design programs.
Pointer (PTR) resource records that are created automatically when you add a host (A or AAAA) resource record to a zone will be deleted automatically if the corresponding host (A or AAAA) resource record is deleted.You can complete this procedure using either the DNS Manager snap-in or the dnscmd command-line tool.lick OK to add the new record to the zone. To add a pointer (PTR) resource record to a reverse lookup zone using a command line. Open a command prompt. To open an elevated Command Prompt window, click Start, point to All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.
Also you may add A-record without name (with the same IP) to DNS and add 'mydomain.com' (without www) name to your site-it will be accessible by http://www.mydomain.com and http://mydomain.com addresses.share | improve this answer. edited Mar 13 '13 at 13:44. Create A-record with name 'www' in your DNS zone, which points to your IP. 2  Review your website/webserver settings and add www.mydomain.com as host name for your site (as soon as single web server can host multiple sites-it must know which name[s] are bound to each site).