I'm not sure about this one. I want to enable the DNSBL power ban checking and was looking at the Spamhaus website for using. I've added this in the DNSBL settings below for use.
But on read their FAQ section, they say use these 3 together.
We recommend you use sbl.spamhaus.org together with xbl.spamhaus.org and pbl.spamhaus.org, as the SBL and XBL/PBL block different spam sources. To save you having to query three separate DNSBL zones, there combined "zen.spamhaus.org" zone contains the complete SBL, XBL and PBL data. Your server can safely reject SMTP connections from any IP listed in Zen by simply setting your mail server's DNSBL check to query zen.spamhaus.org only. Read the XBL FAQ and PBL FAQ for further information if your application uses second-stage filtering such as URI checks or full header traversal.
We ask, but do not require, that all ISPs using our BL zones inform customers of the fact you run spam filters (simply because it is the correct thing to do). Use of known-to-be-effective spam blocklists is normally seen as a service advantage and strong sales point. All SBL, XBL and PBL users are welcome to use the "email protected by" SBL, XBL and PBL web badges on sites.
So do I add these 3 on each line.
Or should I be using this one on it's own (which they seem to say use)?