You probably ended up here because you tried to send an email to one of the users hosted on Dotcomfy, and you got an error message with a link to this page.
If you'd like to get unblocked, please use the contact form on linus.corin.net
Use this form to check an IP address against our block list. For testing, you can use 127.0.0.2:
Check an address against various third party DNS based block lists:
https://mxtoolbox.com/SuperTool.aspx?action=blacklist%3a&run=toolpage