GMail for businesses

Visit http://gmail.google.com
Click on link, Gmail for Organizations
Get a domain name from http://net4india.com
Or use google’s service for a domain name
‘A’ record for website
‘MX’ for Mail exchange
‘CNAME’ for URL of mail server
MX = appmx.l.google.com
CNAME = ghs.google.com
DNS Guide at http://www.google.com/support/a/bin/answer.py?answer=48090.