On Mar 20, 2013, at 09:53, Remy Zandwijk <[email protected]> wrote: > Marko, > >> i see alot of entries from postfix/dnsblog in my logs like this: >> >> postfix/dnsblog[30381]: warning: dnsblog_query: lookup error for DNS query >> 140.99.145.217.xxxxxxxxxxxxxx.zen.dq.spamhaus.net: Host or domain name not >> found. Name service error for >> name=140.99.145.217.xxxxxxxxxxxx.zen.dq.spamhaus.net type=A: Host not found, >> try again >> >> does this mean zenhaus is not reachable or is the ip in that request not >> giving any result? > > Spamhaus is victim of a DDOS attack: > http://news.softpedia.com/news/Anonymous-Hackers-Launch-DDOS-Attack-Against-Spamhaus-338382.shtml
The DDOS attack did not affect DNS resolution, just the website and mail handling. Ours has run unaffected. Check your configuration in 'master.cf', and make sure you are not running with increased logging for 'dnsblog'. If that is not the case, verify that the DNS servers configured on the system work as intended, that you have an active subscription for the Spamhaus commercial service, and so on. Cya, Jona
