Try disabling lookups to your local server (127.0.0.1) in resolv.conf - it might carry a reverse ip zone file (in-addr.arpa) for the network of your servers ip but does not list the reverse dns entries of the other servers. But as bind thinks it's authoritative for that zone it'll fail the dns request. You can verify this by doing something like:
host n.n.n.n 127.0.0.1 with the servers and the problematic IPs to see what your local DNS returns for these IPs RDNS. -- Felix Buenemann On 07.10.2008 5:23 Uhr, Faris Raouf wrote: > I was just having a random look through my logs and I found something I > don't understand. > > I had lots and lots and lots of these (all for the same email address and > IP, over several days) > > > DENIED_RDNS_MISSING from: [EMAIL PROTECTED] to: > [EMAIL PROTECTED] origin_ip: ip-of-hostname.mydomain.tld origin_rdns: > (unknown) auth: (unknown) > > > The source of the message (a notification message) that is being rejected is > a server I own. It definitely does have rDNS (double-checked with dnsstuff) > and for that matter the rdns is hostname.mydomain.tld. > > The spamdyke server's hostname is similar -- someotherhostname.mydomain.tld. > > I have three nameservers listed in my resolv.conf on the spamdyke machine- > 127.0.0.1 (named running locally) and the two OpenDNS servers. > > There are plenty of entries in the log of other servers with correctly > looked up rdns, so lookups are working. > > Does anybody have any guesses as to what might by wrong? The machine running > spamdyke is on the same subnet as the machine being blocked - it's IP is > only 9 lower than the one being blocked. > > In fact I went on to try sending an email to the spamdyke machine from > another server on another IP in the same subnet - it was also rejected on > the basis of no rdns - except again it does have rdns. > > Suggestions would be welcome! Spamdyke itself would appear to be working > correctly and doing what it is supposed to be doing. But obviously I'm > missing something or have done something wrong somewhere, but I don't know > what. Something to do with dns lookups I suppose, but I'm at a loss as to > what. > > > Faris. _______________________________________________ spamdyke-users mailing list [email protected] http://www.spamdyke.org/mailman/listinfo/spamdyke-users
