The chances are high that a listing on Starloop will not cause you any problems. Something happened to their server and now everyone is listed (false positive)
The only way being listed on Starloop will cause you any problems is if you are trying to send email to someone who uses the Starloop blacklist. If you find that it is causing you problems, you have three possible courses of action:
1) Contact Starloop directly and work to get de-listed
2) Contact the email administrator using Starloop and ask them to whitelist you and / or stop using Starloop.
3) Utilize our Email Security Service, which will relay your outbound mail though clean IP Addresses (this is only available to legitimate, non-spamming businesses)