Yo, I feel your pain. Getting your IP listed in Spamhaus ZEN sucks. To spamhaus zen unblock ip, you gotta go to their site and fill out the delisting form. But before that, scan your system for malware using something like Malwarebytes.
Also, check if your IP is blacklisted elsewhere with a tool like Blacklist Check by MXToolbox. For the future, maybe look into setting up SPF, DKIM, and DMARC records. They help a ton!
Also, check if your IP is blacklisted elsewhere with a tool like Blacklist Check by MXToolbox. For the future, maybe look into setting up SPF, DKIM, and DMARC records. They help a ton!