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What you see when your domain has this problem
Added to LNSGBLOCK Details area Ignore

More Information About Lnsgblock

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's an entire Class-C that has NO DNS mappings as well. So as it's 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 your on the SpamGuard list (or many of the other lists), go to this URL and enter your IP Address/Domain. If you run a mail server, and need help in securing it, then please go see for more details.

More information about LNSGBLOCK can be found at their website: