Understanding global whitelist (IP) and RBL

Hi,

I would like to receive an email blocked by Spamhaus :

Code:

Oct 25 07:53:25 gw1 postfix/postscreen[28289]: NOQUEUE: reject: RCPT from [2001:bc8:XXX]:56558: 550 5.7.1 Service unavailable; client [2001:bc8:XXX] blocked using zen.spamhaus.org; from=<root@XXXX>, to=<XXXX>, proto=ESMTP, helo=<a.web.XXX>

I've been to Mail Filter > Who Objects > Whitelist and added the IP address being blocked. However, it seems to have absolutely no effect. Any idea why ? Thank you.

Yann

 

Thank you!