So, that all sounds pretty fucked up. My DNS control panel for my domain doesn't like blanks, but that goes for all entries. Remember, a blank record isn't a 'catch all', it just means it's a record for the root domain of the zone itself.

So if for example.com you have
[blank] [a] 192.168.1.1
www [a] 192.168.1.2

That means example.com resolves to 192.168.1.1 and www.exmaple.com resolves to192.168.1.2. In my case, as I can't have blanks I have to specify the fully qualified name:

example.com. [a] 192.168.1.1
www.example.com. [a] 192.168.1.2

Which does exactly the same thing

In fact, actually, as I was typing this I suddenly realised what was happening. You've actually set up a DNS entry for the following:

matsoninsurance.com.matsoninsurance.com

You can actually type that into the Microsoft checker and it works. So that entry needs to be blank.

GTFO, HA! It's funny how things get solved!  Let me change that up.  How much cold hard American cash is this going to cost me? (angel) 

Try naming it @ if it still don't work. If not, shout at your ISP and make them do it. And you can get me a beer when you come over :)

I'll try @ because, look. They are douches! 

Is this like normal DNS or should that tool show immediate results? Because with @ it still shows nothing.

Yeah, you need to wait :(

OK, I very very much appreciate your assistance. I certainly will get you multiple beers /when/ I visit!

Now, what do you know about postfix or sendmail?

:-{) 

No worries, that's definitely the root cause. Like I say, you may actually need to get your ISP to do it if the control panel doesn't work right.

It's working now!

Really? I'm away from my PC so I'll have to take your word for it for now! If so, /high five/ and /free beer/ to you!