Hi Guys
https://www.spamhaus.com/resource-cente ... y-service/
These changes are quick and easy to make, but if you fail to make them, you could find that at some point in 2022, all or none of your email is blocked!
https://www.claudiokuenzler.com/blog/12 ... n-resolver
We use Cloudflare’s DNS, and this happened to us. More details there viewtopic.php?f=15&t=71026
Did you managed to solve this on a Zimbra, and did you have encountered with this?
Thanks a lot
Best regards
Nikola