Unfortunately, we can only provide you with whatever information the blacklist provided to us. This information should all be included in the notification email you received from us. If that notification did not contain any information about the email campaign that triggered the blacklist issue, please contact Support.
Additional Resources:
Can you give me the spam trap address that triggered the listing?
What is a spamtrap, or spam trap, and why does it matter?
What is a blacklist?
How does Marketo respond to blacklisting and spam notifications?
Top blacklists - What you need to know
Blacklist Remediation
Successful Reconfirmation
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