Spamhaus RBLs

Steve Freegard steve.freegard at
Mon Oct 20 22:23:43 IST 2008

Steven Andrews wrote:
> DNS is giving me the same here.  Although, I can ping it from my comcrap
> machine.  Xbl should be and when I am back on the
> connection that says unknown host I CAN ping that IP directly.

You don't 'ping' an RBL - they have to have an A record for the zone 
name at all (and most don't).  The only requirement is NS records:

[root at mail ~]# host -t NS name server name server
... snip ...

The standard way to test an RBL is via a test point, which is usually

[root at mail ~]# host has address has address has address

Spamhaus will return a DNS status of REFUSED if you are blocked by them 
and you will not get any test points returned.

Hope this helps.

Kind regards,

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