I've done it multiple times with different companies/RBLs
Do you know how long it takes for Cloudmark to reset? I've submitted 4 requests in the past few days, still seeing 500s.
if you DM the IPs or the email you used I can check; generally within 24 hours for remediation
Your DMs are off, but it's 170.130.139.182
This is now reset for you, along with .181; looks like the system got over-zealous with its anti-gaming rules and flagged your reqs as such
and/or you can submit a request to review the reputation of said IP...