Re: Incorrect DNSBL evaluation

2008-07-31 Thread Yves Goergen
On 24.07.2008 22:33 CE(S)T, Yves Goergen wrote: I'm forwarding this issue to the Hetzner support team now. It seems that some other customers have the same problem. I had to keep telling them that it's their fault or at least not mine, they finally confirmed me that one node in their load-bala

Re: Incorrect DNSBL evaluation

2008-07-25 Thread jdow
From: "Yves Goergen" <[EMAIL PROTECTED]> Sent: Friday, 2008, July 25 13:39 On 25.07.2008 21:43 CE(S)T, mouss wrote: BTW. do we have numbers on how many ISPs did update their bind implementations (or have "safe" workarounds) after the recent bug disclosure? According to a Heise.de article, i

Re: Incorrect DNSBL evaluation

2008-07-25 Thread Yves Goergen
On 25.07.2008 21:43 CE(S)T, mouss wrote: BTW. do we have numbers on how many ISPs did update their bind implementations (or have "safe" workarounds) after the recent bug disclosure? According to a Heise.de article, in Austria 2/3 of all ISPs did not yet patch their recursive DNS servers. In U

Re: Incorrect DNSBL evaluation

2008-07-25 Thread mouss
Matthias Leisi wrote: jdow schrieb: | (And if you're running an "'ix" operating system - why aren't you running a | DNS server. That's one of the first "hairy chested 'ix things" I ever Since operating a sizeable DNS infrastructure, I came to prefer to people using a shared/common/ISP-provided

Re: Incorrect DNSBL evaluation

2008-07-25 Thread Yves Goergen
On 20.07.2008 16:18 CE(S)T, Yet Another Ninja wrote: This could be a DNS problem returning a .2 (positive response) for all queries. I have done some further tests and it seems that one of the four nameservers (the .100.100) sometimes returns NXDOMAIN and sometimes 127.0.0.255, which obviousl

Re: Incorrect DNSBL evaluation

2008-07-24 Thread Matt Kettler
Yves Goergen wrote: On 24.07.2008 08:32 CE(S)T, Matt Kettler wrote: Matthias Leisi wrote: Since many mailservers will query the same DNS-related information (eg DNSxL lookups on widely-used mailservers like eg from Yahoo, or from the same botnets), traffic savings through caching are _conside

Re: Incorrect DNSBL evaluation

2008-07-24 Thread Arvid Ephraim Picciani
On Thursday 24 July 2008 22:33:25 Yves Goergen wrote: > I'm forwarding this issue to the Hetzner support team now. It seems that > some other customers have the same problem. hetzner dns is broken since forver. as well as their dhcp and their swicthes and don't get me started. just don't us

Re: Incorrect DNSBL evaluation

2008-07-24 Thread Yves Goergen
On 24.07.2008 08:32 CE(S)T, Matt Kettler wrote: Matthias Leisi wrote: Since many mailservers will query the same DNS-related information (eg DNSxL lookups on widely-used mailservers like eg from Yahoo, or from the same botnets), traffic savings through caching are _considerable_. True, but you

Re: Incorrect DNSBL evaluation

2008-07-23 Thread Matt Kettler
Matthias Leisi wrote: jdow schrieb: | (And if you're running an "'ix" operating system - why aren't you running a | DNS server. That's one of the first "hairy chested 'ix things" I ever Since operating a sizeable DNS infrastructure, I came to prefer to people using a shared/common/ISP-provided

Re: Incorrect DNSBL evaluation

2008-07-23 Thread Matthias Leisi
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 jdow schrieb: | (And if you're running an "'ix" operating system - why aren't you running a | DNS server. That's one of the first "hairy chested 'ix things" I ever Since operating a sizeable DNS infrastructure, I came to prefer to people using a sh

Re: Incorrect DNSBL evaluation

2008-07-23 Thread jdow
From: "Yves Goergen" <[EMAIL PROTECTED]> Sent: Wednesday, 2008, July 23 15:24 On 23.07.2008 19:28 CE(S)T, jdow wrote: Since you are experiencing a DNS problem and there is an exploit for the Kaminsky DNS bug that was fixed in a massive multi-vendor roll out, are you patched or are you sure you

Re: Incorrect DNSBL evaluation

2008-07-23 Thread Yves Goergen
On 23.07.2008 19:28 CE(S)T, jdow wrote: Since you are experiencing a DNS problem and there is an exploit for the Kaminsky DNS bug that was fixed in a massive multi-vendor roll out, are you patched or are you sure you are not getting your DNS spoofed? I'm not running a DNS server. -- Yves Goerg

Re: Incorrect DNSBL evaluation

2008-07-23 Thread mouss
jdow wrote: From: "Yves Goergen" <[EMAIL PROTECTED]> Sent: Wednesday, 2008, July 23 09:05 On 23.07.2008 10:03 CE(S)T, Dirk Bonengel wrote: Just a thought, but could you install a local nameserver (bind9) to act as a caching nameserver? AFAIK, at least in Debian you just need to 'apt-get insta

Re: Incorrect DNSBL evaluation

2008-07-23 Thread jdow
From: "Yves Goergen" <[EMAIL PROTECTED]> Sent: Wednesday, 2008, July 23 09:05 On 23.07.2008 10:03 CE(S)T, Dirk Bonengel wrote: Just a thought, but could you install a local nameserver (bind9) to act as a caching nameserver? AFAIK, at least in Debian you just need to 'apt-get install' bind. De

Re: Incorrect DNSBL evaluation

2008-07-23 Thread Yves Goergen
On 23.07.2008 10:03 CE(S)T, Dirk Bonengel wrote: Just a thought, but could you install a local nameserver (bind9) to act as a caching nameserver? AFAIK, at least in Debian you just need to 'apt-get install' bind. Default config is OK This is Debian 3.1, it's pretty likely to be out of date. I'

Re: Incorrect DNSBL evaluation

2008-07-22 Thread Yves Goergen
Thank you for the explanation of the output. Basically it says the same as the host command before, if I understand this right, and doesn't explain the observed SA behaviour. -- Yves Goergen "LonelyPixel" <[EMAIL PROTECTED]> Visit my web laboratory at http://beta.unclassified.de

Re: Incorrect DNSBL evaluation

2008-07-22 Thread Yves Goergen
On 21.07.2008 23:36 CE(S)T, Karsten Bräckelmann wrote: OK, I told you to check previously received mail for the same broken URIBL hit pattern. So you could just have a look at the X-Spam headers using your MUA. Probably the easiest method anyway, just to spot a few other mails showing the same pa

Re: Incorrect DNSBL evaluation

2008-07-22 Thread Matthias Leisi
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Yves Goergen schrieb: |> $ dig @213.133.100.100 unclassified.de.multi.uribl.com A | | ; <<>> DiG 9.2.4 <<>> @213.133.100.100 unclassified.de.multi.uribl.com A | ;; global options: printcmd | ;; Got answer: | ;; ->>HEADER<<- opcode: QUERY, status: N

Re: Incorrect DNSBL evaluation

2008-07-22 Thread Yves Goergen
On 22.07.2008 06:28 CE(S)T, Dallas Engelken wrote: Every Hetzner customer using the same DNS by default? Yeah, that indeed looks like these DNS servers are being blocked by the BL operators (see my previous post). Most likely not only URIBL, but every major BL out there... No, there are those N

Re: Re: Incorrect DNSBL evaluation

2008-07-21 Thread Dallas Engelken
Karsten Bräckelmann wrote: On Mon, 2008-07-21 at 23:17 +0200, Matthias Leisi wrote: Yves Goergen schrieb: What do you mean? My mail server uses the DNS servers of the computing centre. What SpamAssassin does, I don't know. The IP addresses are: The same as everyone else..

Re: Incorrect DNSBL evaluation

2008-07-21 Thread mouss
Yves Goergen wrote: On 21.07.2008 22:10 CE(S)T, mouss wrote: view source (CTRL-U) and copy-paste to a file on your server. then run # spamassassin -t < message.eml Look through each single message from all my folders that I have received within the last two weeks, view the source, copy it int

Re: Incorrect DNSBL evaluation

2008-07-21 Thread Karsten Bräckelmann
On Mon, 2008-07-21 at 23:17 +0200, Matthias Leisi wrote: > Yves Goergen schrieb: > > What do you mean? My mail server uses the DNS servers of the computing > > centre. What SpamAssassin does, I don't know. The IP addresses are: The same as everyone else... Sic. > > # cat /etc/resolv.conf > > n

Re: Incorrect DNSBL evaluation

2008-07-21 Thread Karsten Bräckelmann
On Mon, 2008-07-21 at 21:50 +0200, Yves Goergen wrote: > On 20.07.2008 22:42 CE(S)T, Karsten Bräckelmann wrote: > > Run such a message through 'spamassassin' again, to see what it reports > > *now*. Do you still see these strange, multiple URIBL hits? > > spamassassin < message > out > > It st

Re: Incorrect DNSBL evaluation

2008-07-21 Thread Matthias Leisi
Yves Goergen schrieb: # cat /etc/resolv.conf nameserver 213.133.100.100 nameserver 213.133.99.99 nameserver 213.133.98.98 nameserver 213.133.98.97 Ah, Hetzner. I had a lot less problems since I started to run my own: main:~> cat /etc/resolv.conf nameserver 127.0.0.1 #nameserver 213.133.100.1

Re: Incorrect DNSBL evaluation

2008-07-21 Thread Yves Goergen
On 21.07.2008 22:10 CE(S)T, mouss wrote: view source (CTRL-U) and copy-paste to a file on your server. then run # spamassassin -t < message.eml Look through each single message from all my folders that I have received within the last two weeks, view the source, copy it into a file, upload it

Re: Incorrect DNSBL evaluation

2008-07-21 Thread mouss
Yves Goergen wrote: On 20.07.2008 22:42 CE(S)T, Karsten Bräckelmann wrote: Run such a message through 'spamassassin' again, to see what it reports *now*. Do you still see these strange, multiple URIBL hits? spamassassin < message > out It still reports that. Also, check other email (incl

Re: Incorrect DNSBL evaluation

2008-07-21 Thread Yves Goergen
On 20.07.2008 16:18 CE(S)T, Yet Another Ninja wrote: This could be a DNS problem returning a .2 (positive response) for all queries. what DNS are you using for your queries? What do you mean? My mail server uses the DNS servers of the computing centre. What SpamAssassin does, I don't know. T

Re: Incorrect DNSBL evaluation

2008-07-21 Thread Yves Goergen
On 20.07.2008 22:42 CE(S)T, Karsten Bräckelmann wrote: Run such a message through 'spamassassin' again, to see what it reports *now*. Do you still see these strange, multiple URIBL hits? spamassassin < message > out It still reports that. Also, check other email (including spam!) for mult

Re: Incorrect DNSBL evaluation

2008-07-21 Thread Yet Another Ninja
This could be a DNS problem returning a .2 (positive response) for all queries. what DNS are you using for your queries? On 7/20/2008 4:03 PM, Yves Goergen wrote: Hello, I just received an e-mail with the following report: X-Spam-Report: Content analysis details: 0.0 URIBL_RED

Re: Incorrect DNSBL evaluation

2008-07-20 Thread Duane Hill
On Mon, 21 Jul 2008, mouss wrote: Duane Hill wrote: On Sun, 20 Jul 2008, Yves Goergen wrote: On 20.07.2008 17:10 CE(S)T, mouss wrote: on the host running SA, try $ host 1.0.0.127.zen.spamhaus.org It says: 1.0.0.127.zen.spamhaus.org does not exist (Authoritative answer) The server is loca

Re: Incorrect DNSBL evaluation

2008-07-20 Thread mouss
Duane Hill wrote: On Sun, 20 Jul 2008, Yves Goergen wrote: On 20.07.2008 17:10 CE(S)T, mouss wrote: on the host running SA, try $ host 1.0.0.127.zen.spamhaus.org It says: 1.0.0.127.zen.spamhaus.org does not exist (Authoritative answer) The server is located in a well-known computing centre

Re: Incorrect DNSBL evaluation

2008-07-20 Thread Karsten Bräckelmann
On Sun, 2008-07-20 at 22:21 +0200, Yves Goergen wrote: > Correct. My fault. I've looked through the e-mails that I have received > today and that contain my quoted signature. All of them I could find > from today have this issue. All messages from today that contain the > link show the same 3 m

Re: Incorrect DNSBL evaluation

2008-07-20 Thread Yves Goergen
On 20.07.2008 20:54 CE(S)T, Duane Hill wrote: smtpgate# host 2.0.0.127.zen.spamhaus.org 2.0.0.127.zen.spamhaus.org has address 127.0.0.10 2.0.0.127.zen.spamhaus.org has address 127.0.0.4 2.0.0.127.zen.spamhaus.org has address 127.0.0.2 Same here, for whatever it's worth. -- Yves Go

Re: Incorrect DNSBL evaluation

2008-07-20 Thread Yves Goergen
On 20.07.2008 20:21 CE(S)T, Karsten Bräckelmann wrote: On Sun, 2008-07-20 at 20:07 +0200, Yves Goergen wrote: On 20.07.2008 16:39 CE(S)T, Karsten Bräckelmann wrote: Bad DNS response? That probably would explain why the domain ended up on RED, GRAY and BLACK. See above. Do you see hits like thes

Re: Incorrect DNSBL evaluation

2008-07-20 Thread Duane Hill
On Sun, 20 Jul 2008, Yves Goergen wrote: On 20.07.2008 17:10 CE(S)T, mouss wrote: on the host running SA, try $ host 1.0.0.127.zen.spamhaus.org It says: 1.0.0.127.zen.spamhaus.org does not exist (Authoritative answer) The server is located in a well-known computing centre in Nuremberg, Germ

Re: Incorrect DNSBL evaluation

2008-07-20 Thread Karsten Bräckelmann
On Sun, 2008-07-20 at 20:07 +0200, Yves Goergen wrote: > On 20.07.2008 16:39 CE(S)T, Karsten Bräckelmann wrote: > > It strikes me as odd that the URI should be listed in all these BLs. DNS > > hiccup? > > Maybe. > > > Bad DNS response? That probably would explain why the domain ended up on > > RE

Re: Incorrect DNSBL evaluation

2008-07-20 Thread Yves Goergen
On 20.07.2008 16:39 CE(S)T, Karsten Bräckelmann wrote: It strikes me as odd that the URI should be listed in all these BLs. DNS hiccup? Maybe. Bad DNS response? That probably would explain why the domain ended up on RED, GRAY and BLACK. See above. Do you see hits like these with other mail, t

Re: Incorrect DNSBL evaluation

2008-07-20 Thread Yves Goergen
On 20.07.2008 17:10 CE(S)T, mouss wrote: on the host running SA, try $ host 1.0.0.127.zen.spamhaus.org It says: 1.0.0.127.zen.spamhaus.org does not exist (Authoritative answer) The server is located in a well-known computing centre in Nuremberg, Germany. I assume they know how to handle DNS

Re: Incorrect DNSBL evaluation

2008-07-20 Thread mouss
Yves Goergen wrote: [snip] The message is a reply to a message from me. It contains my text quoted, complete with my previous signature that also has the link to http://unclassified.de. I was a bit surprised about the high spam score of 5.0 and looked at the report. It says that "unclassified.

Re: Incorrect DNSBL evaluation

2008-07-20 Thread Karsten Bräckelmann
On Sun, 2008-07-20 at 16:03 +0200, Yves Goergen wrote: > Hello, > > I just received an e-mail with the following report: > > > X-Spam-Report: Content analysis details: > > 0.0 URIBL_RED Contains an URL listed in the URIBL redlist > > [URIs: unclassified.de] > > 0.2 URIBL_

Incorrect DNSBL evaluation

2008-07-20 Thread Yves Goergen
Hello, I just received an e-mail with the following report: X-Spam-Report: Content analysis details: 0.0 URIBL_RED Contains an URL listed in the URIBL redlist [URIs: unclassified.de] 0.2 URIBL_GREY Contains an URL listed in the URIBL greylist