[Dnsmasq-discuss] dnsmasq responses.
dnsmasq at vanriel.xs4all.nl
Thu Feb 16 19:53:31 GMT 2006
I'm new to the list, mainly because I have a question about dnsmasq
for which I could not find an answer on the net, nor in this list's
My mailserver runs dnsmasq as a forwarding DNS server. My MTA is XMail
(www.xmailserver.com) which supports spam filtering by querying
several blacklists available on the internet (spamcop, sorbs, etc).
These lists return an ip address, usually between 127.0.0.1 and
127.0.0.10. 127.0.0.1 means the ip address is not blacklisted, all
others mean it is blacklisted. My problem is that dnsmasq does not
seem to return 127.0.0.1 to my mailserver. Here's a part of my syslog:
query[type=1910] 126.96.36.199.dnsbl.sorbs.net from 127.0.0.1
forwarded 188.8.131.52.dnsbl.sorbs.net to 184.108.40.206
query[A] 220.127.116.11.dnsbl.sorbs.net from 127.0.0.1
forwarded 18.104.22.168.dnsbl.sorbs.net to 22.214.171.124
reply 126.96.36.199.dnsbl.sorbs.net is 127.0.0.10
The first query never comes back with a reply. The ip (188.8.131.52)
is not blacklisten on dnsbl.sorbs.net so it should have returned
The second query does return an ip address because this one is
Does anybody know what the problem is here? My smtp threads wait for
about 90 seconds for a reply from my dns server. During a wave of spam
(I receive about 30,000 a day) all my smtp threads are waiting...
blocking other mail servers from connecting to deliver mail.
Any advice is more than welcome!
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