Has there been some sort of attack on this website recently?

I've started to receive spam on the email address I use only for LandyZone so I'm guessing something must have happened.

I get this all the time, it's using a spybot and you are just another name on a list. they start at a 10,000 addresses and work the machine to add characters. Now the worst thing to do is open the mail as it has a telltale embedded to say it's a live address. Then they sell off your address and the waterfall starts. Best way is to delete the address after telling Landy zone your new one. I get fraud emails I send to the Police direct. Soon stops those ones. I always delete them as soon as they arrive.

I doubt they are brute forcing the email in this instance as it's a domain that I own so it's not a usual email provider, also the domain is unusually long so they won't have brute forced that part of the address.
Due to the way the domain is set up I would see all attempts they made of brute forcing the first part of the email address before hitting the landyzone registered address and there were none. So the only way this email address would have become known is from some sort of info leak.