SpamBlock Sites: Sites on this listing have sent direct SPAM, but when looking up the rDNS information on the spam's IP, we realize it is an entire Class-C that has NO DNS mappings, as well. So, as it is a range with identified SPAM and no way to isolate the range, we block the entire block -- If you tried to send email and it was REJECTED with an error message that pointed to this page, then the IP address of your outgoing mail server is on our local blacklist. To see if you are on the SpamGuard list (or many of the other lists), go to this URL: http://relays.osirusoft.com/cgi-bin/rbcheck.cgi and enter your IP Address/Domain. If you run a mail server and need help in securing it, then please go here: http://mail-abuse.org/tsi/ar-fix.html for more details.