J Doe:
> Sep 7 16:13:08 server postfix/smtpd[28363]: warning:
> 188.50.102.94.zen.spamhaus.org: RBL lookup error: Host or domain name not
> found. Name service error for name=188.50.102.94.zen.spamhaus.org type=A:
> Host not found, try again
>
> I am wondering - in normal checks against SpamHaus, if a host is not listed
> and the result is NXDOMAIN, I am assuming that Postfix interprets that the
> host is ?ok? and does not log any information. In this case, though, it has
> logged the information and I am wondering if this is because Postfix was
> unable to contact SpamHaus at all, not just regarding the record:
> 188.50.102.94.zen.spamhaus.org ?
>
This service is free for low-volume clients only. If you send your
Spamhaus queries through a shared DNS resolver (like an ISP), then
you may exceed their 'free service' limits. You may be better off
using your own DNS resolver.
Wietse
