On Mon, Jul 18, 2011 at 6:43 PM, Alex Marz <a...@marz.ca> wrote:
> I realize this is slightly off topic, but I've noticed recently that I've 
> been unable to preform RBL lookups using the the zen and sbl spamhaus RBL 
> lists. Currently using Zimbra Collaboration Suite using CentOS 5 I'm seeing 
> logs showing the following output.
>
> [root@phantom ~]# cat /var/log/zimbra.log | grep spamhaus
> Jul 18 13:07:12 phantom postfix/smtpd[27001]: warning: 
> 107.178.203.192.zen.spamhaus.org: RBL lookup error: Host or domain name not 
> found. Name service error for name=107.178.203.192.zen.spamhaus.org type=A: 
> Host not found, try again

Works for me (I'm running Bind locally to resolve names), though
1.ns.spamhaus.org times out.

I'd suggest flushing the cache or change the resolver/try with a
different resolver.
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