[CentOS] Apparent BIND problem doing RBL lookups for Postfix

Nataraj
Thu, 15 Apr 2010 04:52:30 -0000

listserv.traffic at sloop.net wrote:
> My apologies if I'm posting the wrong place, or am asking a common
> question. All my looking so far hasn't turned up anything very useful
> in knowing what to look at, or what to modify.
>
> ---
> CentOS 5, running BIND 9.3.6
> i386
>
> Hardware:
> P4, 2.8Ghz, 1G memory
> Sata drives - non mirrored etc.
>
> Load is light, usually under 0.1
>
> --
> This box is running Postfix as our mail server. BIND (9.3.6) [Latest.]
>
> --
> Problem:
> Postfix is doing RBL lookups on zen.spamhaus.org.
> Everything goes along groovy - but then lookups start failing.
>
> Early in the process, we get stuff like this: [We have a
"successful"
> lookup, and then a failure...]
> ---
> Apr 14 14:25:05 mail postfix/smtpd[22281]: NOQUEUE: reject: RCPT from
bzq-79-183-5-119.red.bezeqint.net[79.183.5.119]: 554 5.7.1 Service unavailable;
Client host [79.183.5.119] blocked using zen.spamhaus.org;
from=<contriveclaudia at royalmoore.com> to=<contriveclaudia at
royalmoore.com> proto=SMTP helo=<bzq-79-183-5-119.red.bezeqint.net>
>
> Apr 14 14:25:07 mail postfix/smtpd[22804]: warning:
33.229.242.205.zen.spamhaus.org: RBL lookup error: Host or domain name not
found. Name service error for name=33.229.242.205.zen.spamhaus.org type=A: Host
not found, try again
> ---
> As you can see, we had a lookup succeed and then just right after, one fail
- claiming it got no answer from BIND. I get others after this that SUCCEED - so
it's not in 100% failure mode yet.
> After time [how much, I don't know] eventually all the zen queries
> [or most all] fail.
>
> A bind restart fixes the problem. [Hmmm...]
>
Check out the following bug report. I would also look at other bind bug
reports. My sense is that redhat has deviated quite a bite from the ISC
version of bind. In particular I believe that they disabled or otherwise
modified the caching behavior back about 6-8 months ago when there were
major security issues with bind. I have felt that my Red Hat/Centos name
servers have not worked as well as Fedora or ISC bind name servers since
this time. You might try installing ISC bind and see if that solves your
problem.

https://bugzilla.redhat.com/show_bug.cgi?id=553334

Nataraj
> ---
> I do some logging in bind, and I don't see any reason for them to fail.
Here's a bind debug log of 5 on that failure above.
>
> ---
> 14-Apr-2010 14:24:57.654 queries: info: client 127.0.0.1#42018: query:
33.229.242.205.zen.spamhaus.org IN A +
> 14-Apr-2010 14:24:57.654 security: debug 3: client 127.0.0.1#42018: query
(cache) '33.229.242.205.zen.spamhaus.org/A/IN' approved
> 14-Apr-2010 14:24:57.654 resolver: debug 1: createfetch:
33.229.242.205.zen.spamhaus.org A
> 14-Apr-2010 14:24:57.654 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): create
> 14-Apr-2010 14:24:57.654 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): join
> 14-Apr-2010 14:24:57.654 resolver: debug 3: fetch 0x94a0b20 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): created
> 14-Apr-2010 14:24:57.655 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): start
> 14-Apr-2010 14:24:57.655 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): try
> 14-Apr-2010 14:24:57.655 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): cancelqueries
> 14-Apr-2010 14:24:57.655 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): getaddresses
> 14-Apr-2010 14:24:57.655 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): query
> 14-Apr-2010 14:24:57.655 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): send
> 14-Apr-2010 14:24:57.655 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): sent
> 14-Apr-2010 14:24:57.655 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): udpconnected
> 14-Apr-2010 14:24:57.655 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): senddone
> 14-Apr-2010 14:24:59.657 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): timeout
> 14-Apr-2010 14:24:59.657 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): cancelquery
> 14-Apr-2010 14:24:59.657 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): try
> 14-Apr-2010 14:24:59.657 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): query
> 14-Apr-2010 14:24:59.657 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): send
> 14-Apr-2010 14:24:59.657 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): sent
> 14-Apr-2010 14:24:59.657 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): udpconnected
> 14-Apr-2010 14:24:59.657 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): senddone
> 14-Apr-2010 14:25:01.658 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): timeout
> 14-Apr-2010 14:25:01.658 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): cancelquery
> 14-Apr-2010 14:25:01.658 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): try
> 14-Apr-2010 14:25:01.658 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): query
> 14-Apr-2010 14:25:01.658 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): send
> 14-Apr-2010 14:25:01.659 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): sent
> 14-Apr-2010 14:25:01.659 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): udpconnected
> 14-Apr-2010 14:25:01.659 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): senddone
> 14-Apr-2010 14:25:02.653 queries: info: client 127.0.0.1#42018: query:
33.229.242.205.zen.spamhaus.org IN A +
> 14-Apr-2010 14:25:02.653 security: debug 3: client 127.0.0.1#42018: query
(cache) '33.229.242.205.zen.spamhaus.org/A/IN' approved
> 14-Apr-2010 14:25:02.654 resolver: debug 1: createfetch:
33.229.242.205.zen.spamhaus.org A
> 14-Apr-2010 14:25:02.654 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): join
> 14-Apr-2010 14:25:02.654 resolver: debug 3: fetch 0x94d54c8 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): created
> 14-Apr-2010 14:25:03.660 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): timeout
> 14-Apr-2010 14:25:03.660 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): cancelquery
> 14-Apr-2010 14:25:03.660 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): try
> 14-Apr-2010 14:25:03.660 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): query
> 14-Apr-2010 14:25:03.660 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): send
> 14-Apr-2010 14:25:03.660 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): too many timeouts, disabling
EDNS0
> 14-Apr-2010 14:25:03.660 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): sent
> 14-Apr-2010 14:25:03.660 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): udpconnected
> 14-Apr-2010 14:25:03.660 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): senddone
> 14-Apr-2010 14:25:05.663 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): timeout
> 14-Apr-2010 14:25:05.663 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): cancelquery
> 14-Apr-2010 14:25:05.663 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): try
> 14-Apr-2010 14:25:05.663 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): query
> 14-Apr-2010 14:25:05.663 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): send
> 14-Apr-2010 14:25:05.663 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): too many timeouts, disabling
EDNS0
> 14-Apr-2010 14:25:05.663 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): sent
> 14-Apr-2010 14:25:05.663 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): udpconnected
> 14-Apr-2010 14:25:05.663 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): senddone
> 14-Apr-2010 14:25:07.664 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): timeout
> 14-Apr-2010 14:25:07.664 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): cancelquery
> 14-Apr-2010 14:25:07.664 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): try
> 14-Apr-2010 14:25:07.664 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): query
> 14-Apr-2010 14:25:07.664 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): send
> 14-Apr-2010 14:25:07.664 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): too many timeouts, disabling
EDNS0
> 14-Apr-2010 14:25:07.665 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): sent
> 14-Apr-2010 14:25:07.665 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): udpconnected
> 14-Apr-2010 14:25:07.665 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): senddone
> 14-Apr-2010 14:25:08.393 queries: info: client 127.0.0.1#50896: query:
33.229.242.205.zen.spamhaus.org IN A +
> 14-Apr-2010 14:25:08.393 security: debug 3: client 127.0.0.1#50896: query
(cache) '33.229.242.205.zen.spamhaus.org/A/IN' approved
> 14-Apr-2010 14:25:08.393 resolver: debug 1: createfetch:
33.229.242.205.zen.spamhaus.org A
> 14-Apr-2010 14:25:08.393 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): join
> 14-Apr-2010 14:25:08.393 resolver: debug 3: fetch 0x94ad9c8 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): created
> 14-Apr-2010 14:25:09.666 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): timeout
> 14-Apr-2010 14:25:09.666 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): cancelquery
> 14-Apr-2010 14:25:09.666 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): try
> 14-Apr-2010 14:25:09.666 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): query
> 14-Apr-2010 14:25:09.666 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): send
> 14-Apr-2010 14:25:09.666 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): too many timeouts, disabling
EDNS0
> 14-Apr-2010 14:25:09.666 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): sent
> 14-Apr-2010 14:25:09.666 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): udpconnected
> 14-Apr-2010 14:25:09.666 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): senddone
> 14-Apr-2010 14:25:11.668 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): timeout
> 14-Apr-2010 14:25:11.668 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): cancelquery
> 14-Apr-2010 14:25:11.668 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): try
> 14-Apr-2010 14:25:11.668 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): query
> 14-Apr-2010 14:25:11.668 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): send
> 14-Apr-2010 14:25:11.668 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): too many timeouts, disabling
EDNS0
> 14-Apr-2010 14:25:11.668 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): sent
> 14-Apr-2010 14:25:11.668 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): udpconnected
> 14-Apr-2010 14:25:11.668 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): senddone
> 14-Apr-2010 14:25:13.669 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): timeout
> 14-Apr-2010 14:25:13.669 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): cancelquery
> 14-Apr-2010 14:25:13.669 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): try
> 14-Apr-2010 14:25:13.669 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): query
> 14-Apr-2010 14:25:13.669 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): send
> 14-Apr-2010 14:25:13.669 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): too many timeouts, disabling
EDNS0
> 14-Apr-2010 14:25:13.670 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): sent
> 14-Apr-2010 14:25:13.670 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): udpconnected
> 14-Apr-2010 14:25:13.670 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): senddone
> 14-Apr-2010 14:25:15.671 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): timeout
> 14-Apr-2010 14:25:15.671 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): cancelquery
> 14-Apr-2010 14:25:15.671 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): try
> 14-Apr-2010 14:25:15.671 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): query
> 14-Apr-2010 14:25:15.671 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): send
> 14-Apr-2010 14:25:15.671 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): too many timeouts, disabling
EDNS0
> 14-Apr-2010 14:25:15.671 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): sent
> 14-Apr-2010 14:25:15.671 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): udpconnected
> 14-Apr-2010 14:25:15.671 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): senddone
> 14-Apr-2010 14:25:17.673 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): timeout
> 14-Apr-2010 14:25:17.673 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): cancelquery
> 14-Apr-2010 14:25:17.673 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): try
> 14-Apr-2010 14:25:17.673 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): query
> 14-Apr-2010 14:25:17.673 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): send
> 14-Apr-2010 14:25:17.673 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): too many timeouts, disabling
EDNS0
> 14-Apr-2010 14:25:17.673 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): sent
> 14-Apr-2010 14:25:17.673 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): udpconnected
> 14-Apr-2010 14:25:17.673 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): senddone
> 14-Apr-2010 14:25:19.674 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): timeout
> 14-Apr-2010 14:25:19.674 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): cancelquery
> 14-Apr-2010 14:25:19.674 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): try
> 14-Apr-2010 14:25:19.674 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): query
> 14-Apr-2010 14:25:19.674 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): send
> 14-Apr-2010 14:25:19.674 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): too many timeouts, disabling
EDNS0
> 14-Apr-2010 14:25:19.675 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): sent
> 14-Apr-2010 14:25:19.675 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): udpconnected
> 14-Apr-2010 14:25:19.675 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): senddone
> 14-Apr-2010 14:25:21.676 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): timeout
> 14-Apr-2010 14:25:21.676 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): cancelquery
> 14-Apr-2010 14:25:21.676 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): try
> 14-Apr-2010 14:25:21.676 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): query
> 14-Apr-2010 14:25:21.676 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): send
> 14-Apr-2010 14:25:21.676 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): too many timeouts, disabling
EDNS0
> 14-Apr-2010 14:25:21.676 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): sent
> 14-Apr-2010 14:25:21.676 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): udpconnected
> 14-Apr-2010 14:25:21.676 resolver: debug 3: resquery 0x940ec38 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): senddone
> 14-Apr-2010 14:25:23.677 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): timeout
> 14-Apr-2010 14:25:23.678 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): cancelquery
> 14-Apr-2010 14:25:23.678 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): try
> 14-Apr-2010 14:25:23.678 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): query
> 14-Apr-2010 14:25:23.678 resolver: debug 3: resquery 0x94ae7b8 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): send
> 14-Apr-2010 14:25:23.678 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): too many timeouts, disabling
EDNS0
> 14-Apr-2010 14:25:23.678 resolver: debug 3: resquery 0x94ae7b8 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): sent
> 14-Apr-2010 14:25:23.678 resolver: debug 3: resquery 0x94ae7b8 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): udpconnected
> 14-Apr-2010 14:25:23.678 resolver: debug 3: resquery 0x94ae7b8 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): senddone
> 14-Apr-2010 14:25:23.912 resolver: debug 3: resquery 0x94ae7b8 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): response
> 14-Apr-2010 14:25:23.912 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): noanswer_response
> 14-Apr-2010 14:25:23.912 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): ncache_message
> 14-Apr-2010 14:25:23.912 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): clone_results
> 14-Apr-2010 14:25:23.912 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): cancelquery
> 14-Apr-2010 14:25:23.912 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): done
> 14-Apr-2010 14:25:23.912 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): stopeverything
> 14-Apr-2010 14:25:23.912 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): cancelqueries
> 14-Apr-2010 14:25:23.913 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): sendevents
> 14-Apr-2010 14:25:23.913 resolver: debug 3: fetch 0x94a0b20 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): destroyfetch
> 14-Apr-2010 14:25:23.913 resolver: debug 3: fetch 0x94d54c8 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): destroyfetch
> 14-Apr-2010 14:25:23.913 resolver: debug 3: fetch 0x94ad9c8 (fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A)): destroyfetch
> 14-Apr-2010 14:25:23.914 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): shutdown
> 14-Apr-2010 14:25:23.914 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): doshutdown
> 14-Apr-2010 14:25:23.914 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): stopeverything
> 14-Apr-2010 14:25:23.914 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): cancelqueries
> 14-Apr-2010 14:25:23.914 resolver: debug 3: fctx
0x932e140(33.229.242.205.zen.spamhaus.org/A'): destroy
> ---
> As far as I can see, the BIND query simply didn't get a response -
> but no errors?
>
> ---
> First, someone's going to ask - perhaps Zen's blocking you. I
don't
> think so. Here's why.
> -We're non-commercial, using the definition set my spamhaus,
> -mail connects TOTAL are well less than 100K a day. (Less than 10K in
actuality)
> -and thus having more than 300K queries is pretty unlikely.
>
> -Also, let me remind you that a restart of the bind service seems to
> make the failures go away for a while, so if zen were blocking our queries,
I'd think that wouldn't make a difference.
>
> ---
> I certainly suspect a problem with BIND, but I can't find it, and have
no idea where to go from here.
> I simply don't know where to look any more. If BIND were having a
problem, say allocating memory, or something, shouldn't it be in a debug
level 5 log?
>
> HELP!
>
> -Greg
>
> [Cross posted from elsewhere, but I'm at a dead-end right now, so
> looking for a steer in where to ask, or direct help! TIA]
>
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