http not working

[skywalllker]

I have a weird problem happening to only few of my domains. From web browser, any of URL below is working fine:

webmail.domain.com
ftp.domain.com (it will open up a new window asking for login info)
domain.com:8443 (it will redirect to control panel login page)

However, URL below not working:
www.domain.com
domain.com

I have checked the DNS entries, all looks alright. I even initiate DNS test from dnsgoodies.com and it return fine.

What could be the problem?

Thanks guys!

 

[IgorG]

What exact error do you have when you open these URLs?