[ILUG] Postfix problems with spamhaus blacklists

[Philip Reynolds]

Niall O Broin <niall at linux.ie> 26 lines of wisdom included:
> Apr 17 00:41:31 pogo1 postfix/smtpd[26325]: warning:        \ 
> 230.192.141.69.sbl-xbl.spamhaus.org: RBL lookup error:      \
> Name service error for 230.192.141.69.sbl-xbl.spamhaus.org: \
> Host not found, try again
> 
> 
> Now surely in the normal course of event, this is (hopefully) what you'll see 
> more of i.e. failed lookups because the host is NOT in the list. So, why is 
> that being reported? Also, in the current logs I am seeing NO RBL rejected 
> messages. I suppose it's possible that the spammers have stopped sending mail 
> to this server, but I doubt it, somehow.

No, the lookup failed because the DNS server was unreachable; "Name
service error for"

Can you reach the spamhaus RBL manually? I personally don't use
spamhaus, so I can't comment on whether it's working or not. It
should be easy to troubleshoot that by hand though.

If Postfix can't get to the RBL, it can't reject messages (it chooses
the lesser of two evils here, i.e. accepting everything rather than
blocking everything)

Regards,
-- 
Philip Reynolds                      | RFC Networks Ltd.
philip.reynolds at rfc-networks.ie      | +353 (0)1 8832063
http://people.rfc-networks.ie/~phil/ | www.rfc-networks.ie
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