Ugh, Spamhaus ZEN is a pain. I had to spamhaus zen unblock ip last year, and it took a few tries. First, make sure your IP isn’t sending spam (check your mail server logs). Then, go to Spamhaus’s site and submit a delisting request. They’re pretty quick if everything’s clean.
To avoid this, use tools like Mail Tester to check your emails before sending. Also, consider using a dedicated IP if you’re on shared hosting.
To avoid this, use tools like Mail Tester to check your emails before sending. Also, consider using a dedicated IP if you’re on shared hosting.