I found a little problem. One of these free subdomains sends tons of spam mails, with links that leads to curious websites. With appropriate research, I was able to find out that ezyro.com is being offered by profreehost.com. Since I did not find the contact form, I post this here:
The source of spammails probably comes from jamesb.ezyro.com
I hope the problem can be resolved soon.
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