zimbra ip blacklist

[rdlal]

Hello everyone

I wonder if its possible to block (temporarily/permanently) an attacker IP address using whatever Zimbra config. I know we can easily achieve that on our firewall, but i wonder if it's possible to locally reject and how to do it directly into Zimbra.

My guess would be a spam related block, but we need to reject it's connection before the greeting..

Thanks in advance for any help.