1.Log into the whm control panel using the url

http://domainname/whm

2.on the left side navigate to >> install frontpage mail extension

3.clcik on the link

4.It will propmt you a mess as

“FrontPage Mail Extensions allow you to send mail from forms created by FrontPage. Clicking ‘Install’ will install FrontPage Mail Extensions for all domains on the server.”

5.click on the proceed button

6.Now it will install the frontpage mail extension and give you a confirmation mess on successfull installation

"Searching for domains without mail extensions...
Checking again to ensure all domains have been updated.....
Search Complete! All domains now have frontpage mail!"