Multi-Stage Open Relay chains that have sent spam to us and are not listed on one of the other active RBLs -- 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.