I have some questions regarding reverse DNS:
- is reverse DNS really that important?
- do we need to setup reverse DNS for each new domain we add in the control panel? (it's just inconvenient to keep track of the domains and ips)
- if we don't setup reverse DNS, can it cause any connectivity problem in some ISPs? Will it cause any email sent from the domain rejected by some mailservers (which verifies reverse DNS for spam protection)?
The problem is that I just setup a new client on the box about two weeks ago and he's unable to access his site intermittently a few times a day although the domain has been transferred (via Netsol) for over a week. The DNS should have been propagated.
He's in the US and using RoadRunner. Do you think it's a DNS problem in RoadRunner? But how can it happen only occassionally, not all the time?