Something is wrong with your server, I guess...
If we take a look at the dnsreport for the domain:
http://www.dnsreport.com/tools/dnsreport.ch?domain=http://www.propertyinvestor.info
The first thing you notice is open dns server. Well, this can 'support' ddos attacks, but is not related to this problem.
Secondly we find that your IP 60.234.71.70 is
not responding to DNS calls. Not unusual, but still bad and could be a beginning of understanding the problem.
Thirdly there's a few warnings, of which 'TCP allowed' means that the TCP connection to the IP of the nameserver (that .70 IP) failed.
So both UDP and TCP failed. That's bad, although could mean a few things.
But we're not there yet:
Your MX record states:
10 mail.propertyinvestor.info. [TTL=14400] IP=60.234.71.70
Which means, it will use .70 to deliver mail to. But then another error, it's unable to connect there.
Which was the last real error. If you look at all of this, you can come to the following conclusion:
The IP 60.234.17.70 is totally
not responding to any requests. Which is bad, as this makes your website unavailable.
Furthermore, when trying to confirm this with a portscan, I got:
Note: Host seems down.
If the host is NOT down, you should contact the provider to confirm the IP is actually bound to the server. If you yourself manage this server, login as root (ssh) and type: "ifconfig<enter>", and check to see if there's something like:
Code:
eth0 Link encap:Ethernet HWaddr xx:xx:xx:xx:xx:xx
inet addr:<the .70 ip> Bcast:<some ip> Mask:<some subnet>
If this is the case, there's something wrong, which I am unable to explain just yet. Unless you're next to the server, and there's a firewall between Internet and the server, or you've used iptables to make sure no one can access the server...
If it's not listed, you should try to find out why, as DA should write the config data to bring up and interface when the system is rebooted.
The reason DNS still works is due to the fact it solely depends on the second DNS server at the moment. Which will dump it's record after 14 day's of being unable to connect to you server.
So, can you confirm the .70 IP is actually working?