On Thu, Oct 21, 2010 at 7:26 AM, Jethro R Binks <[email protected]> wrote:
> As far as I can see from debugging, the resolver is behaving strangely, > but I do not understand why, and I know there are cleverer minds here. This reverse DNS is badly configured. Running dig +tra 5.131.80.194.in-addr.arpa ptr reveals uwrz02 throwing the same records over & over again. Here's a snippet. 131.80.194.in-addr.arpa. 85988 IN NS uwrz02.wales.ac.uk. 131.80.194.in-addr.arpa. 85988 IN NS uwrz04.wales.ac.uk. ;; Received 128 bytes from 194.80.131.2#53(uwrz02.wales.ac.uk) in 111 ms 131.80.194.in-addr.arpa. 85988 IN NS uwrz04.wales.ac.uk. 131.80.194.in-addr.arpa. 85988 IN NS uwrz02.wales.ac.uk. ;; Received 128 bytes from 194.80.131.2#53(uwrz02.wales.ac.uk) in 117 ms 131.80.194.in-addr.arpa. 85987 IN NS uwrz02.wales.ac.uk. 131.80.194.in-addr.arpa. 85987 IN NS uwrz04.wales.ac.uk. ;; Received 128 bytes from 194.80.131.2#53(uwrz02.wales.ac.uk) in 111 ms 131.80.194.in-addr.arpa. 85987 IN NS uwrz04.wales.ac.uk. 131.80.194.in-addr.arpa. 85987 IN NS uwrz02.wales.ac.uk. ;; Received 128 bytes from 194.80.131.2#53(uwrz02.wales.ac.uk) in 123 ms There is something wrong with uwrz02.wales.ac.uk: [r...@cokecan samba]# dig @uwrz02.wales.ac.uk 131.80.194.in-addr.arpa. ptr ; <<>> DiG 9.3.4-P1 <<>> @uwrz02.wales.ac.uk 131.80.194.in-addr.arpa. ptr ; (1 server found) ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 27465 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;131.80.194.in-addr.arpa. IN PTR ;; Query time: 2315 msec ;; SERVER: 194.80.131.2#53(194.80.131.2) ;; WHEN: Thu Oct 21 08:02:03 2010 ;; MSG SIZE rcvd: 41 I can't even reach uwrz04: [r...@cokecan samba]# dig @uwrz04.wales.ac.uk 131.80.194.in-addr.arpa. ptr ; <<>> DiG 9.3.4-P1 <<>> @uwrz04.wales.ac.uk 131.80.194.in-addr.arpa. ptr ; (1 server found) ;; global options: printcmd ;; connection timed out; no servers could be reached I'm in the southeast USA, so if this is location-specific (e.g. anycasting or load-balancing), it may be hard to troubleshoot. But it doesn't look like it's just you or your exim ;) -- HTH, YMMV, HANW :) Jason The path to enlightenment is /usr/bin/enlightenment. -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
