Recently while setting up the DNSFailover.org.uk and doing some trouble shooting on DNS related maters for another company, System i found my self haivng a lot of DOS boxes open with NSLOOKUP running and thought to my self, would’nt it be nice if there was someway of seeing the status of a DNS server at a glance.
So I did alot of googling and it was not long until i found intodns.com, its a great free DNS lookup and information source for everything to do with your DNS set up, all you do is type in your domain name and it tells you everything you want to know about the status of all the useful information for that domain name.
While looking for the above I also came across MXtoolbox again another great free little tool to help you analyse your MX Records and see if your servers are open mail relays and stuff.