Re: postfix and dns lookup

2011-02-05 Thread Benny Pedersen
On Fri, 04 Feb 2011 08:44:39 -0600, Noel Jones njo...@megan.vbhcs.org wrote: At least set up a local caching resolver with 8.8.8.8 as the forwarder. in case of bind this is bad to use any forwarder since it disables hint zone, forwarders is more usefull pr zone, so keeep forwards out of

Re: postfix and dns lookup

2011-02-05 Thread Reindl Harald
Am 05.02.2011 12:37, schrieb Benny Pedersen: On Fri, 04 Feb 2011 08:44:39 -0600, Noel Jones njo...@megan.vbhcs.org wrote: At least set up a local caching resolver with 8.8.8.8 as the forwarder. in case of bind this is bad to use any forwarder since it disables hint zone, forwarders is

Re: postfix and dns lookup

2011-02-05 Thread Matteo Cazzador
hello, the nature of the problem that causes temporary lookup failure is not dns like i thinking of, the problem is caused by mysql backend. Some spam has strange charset that caused mysql error, see previous mail about it. Thank's a lot. Il 05/02/2011 13:55, Reindl Harald ha scritto: Am

Re: postfix and dns lookup

2011-02-05 Thread Charles Marcus
On 2/5/2011 7:55 AM, Reindl Harald wrote: Am 05.02.2011 12:37, schrieb Benny Pedersen: On Fri, 04 Feb 2011 08:44:39 -0600, Noel Jonesnjo...@megan.vbhcs.org wrote: At least set up a local caching resolver with 8.8.8.8 as the forwarder. in case of bind this is bad to use any forwarder since

Re: postfix and dns lookup

2011-02-05 Thread Reindl Harald
Am 05.02.2011 18:49, schrieb Charles Marcus: in case of bind this is bad to use any forwarder since it disables hint zone, forwarders is more usefull pr zone, so keeep forwards out of options containter in named.conf And where is the problem? Nobody needs the hint zone in his LAN because

Re: postfix and dns lookup

2011-02-05 Thread Jeroen Geilman
On 2/5/11 6:58 PM, Reindl Harald wrote: bullshit! snipped paragraphs of invective Way to make your case. -- J.

Re: postfix and dns lookup

2011-02-05 Thread Reindl Harald
Am 05.02.2011 19:05, schrieb Jeroen Geilman: On 2/5/11 6:58 PM, Reindl Harald wrote: bullshit! snipped paragraphs of invective Way to make your case. sorry, but this was the only right answer for you can not use dns-forwarder and blacklists http://www.postfix.org/TUNING_README.html

Re: postfix and dns lookup

2011-02-05 Thread Ralf Hildebrandt
* Reindl Harald h.rei...@thelounge.net: Way to make your case. sorry, but this was the only right answer for you can not use dns-forwarder and blacklists Well, you cannot use (for example) zen.spamhaus.org via 8.8.8.8 or 8.8.4.4 -- Ralf Hildebrandt Geschäftsbereich IT | Abteilung

Re: postfix and dns lookup

2011-02-05 Thread Noel Jones
On 2/5/2011 12:11 PM, Reindl Harald wrote: Am 05.02.2011 19:05, schrieb Jeroen Geilman: On 2/5/11 6:58 PM, Reindl Harald wrote: bullshit! snipped paragraphs of invective Way to make your case. sorry, but this was the only right answer for you can not use dns-forwarder and blacklists

Re: postfix and dns lookup

2011-02-05 Thread Jeroen Geilman
On 2/5/11 7:11 PM, Reindl Harald wrote: Am 05.02.2011 19:05, schrieb Jeroen Geilman: On 2/5/11 6:58 PM, Reindl Harald wrote: bullshit! snipped paragraphs of invective Way to make your case. sorry, but this was the only right answer for you can not use dns-forwarder and blacklists I

Re: postfix and dns lookup

2011-02-05 Thread /dev/rob0
On Sat, Feb 05, 2011 at 03:24:01PM +0100, Matteo Cazzador wrote: hello, the nature of the problem that causes temporary lookup failure is not dns like i thinking of, the problem is caused by mysql backend. Some spam has strange charset that caused mysql error, see previous mail about it.

Re: postfix and dns lookup

2011-02-05 Thread Reindl Harald
Am 05.02.2011 19:27, schrieb /dev/rob0: Perhaps so. And on average the TTL for cache hits will be roughly half what you'd have when doing the recursion yourself. but it's only ONE request and your are not the onnyl one refreshing his caches * This cached requests are much faster and fewer

Re: postfix and dns lookup

2011-02-05 Thread Stan Hoeppner
Charles Marcus put forth on 2/5/2011 11:49 AM: But you can't use one of the big public DNS resolvers if you are using spamhaus or any of the other BLs... Exactly why I installed pdns recursor on my MX about a year ago or so. I'd been using my ISP's resolvers and began having problems with

Re: postfix and dns lookup

2011-02-05 Thread Stan Hoeppner
Reindl Harald put forth on 2/5/2011 12:49 PM: http://www.barracudanetworks.com/ns/?L=de Get a (virtual) appliance, their filters are fine and their one blacklist does never block anybody You speak of trust WRT to Spamhaus, which is the must trusted dnsbl outfit on the planet, and has been

Re: postfix and dns lookup

2011-02-05 Thread Victor Duchovni
On Sat, Feb 05, 2011 at 01:49:23PM -0600, Stan Hoeppner wrote: You speak of trust WRT to Spamhaus [...] Let's close the thread here. Not a good idea to debate whose RBL is less evil on this list. Both are widely used, neither is evil enough to warrant traffic here. -- Viktor.

KILL THIS THREAD (postfix and dns lookup)

2011-02-05 Thread Wietse Venema
Victor Duchovni: On Sat, Feb 05, 2011 at 01:49:23PM -0600, Stan Hoeppner wrote: You speak of trust WRT to Spamhaus [...] Let's close the thread here. Not a good idea to debate whose RBL is less evil on this list. Both are widely used, neither is evil enough to warrant traffic here. This

Re: postfix and dns lookup

2011-02-05 Thread Benny Pedersen
On Sat, 05 Feb 2011 13:55:01 +0100, Reindl Harald h.rei...@thelounge.net wrote: And where is the problem? spamhaus ? :-) Nobody needs the hint zone in his LAN because some reasons: without the hint zone bind wont work * A big external forwarder has many requests in his cache one problem

postfix and dns lookup

2011-02-04 Thread Matteo Cazzador
Hello , i've a question , i want do configure postfix to use external dns like (8.8.8.8) to resolve every domain (lookup for examples) for incoming mail and outgoing mail. I don't want to use local dns on postfix server is it possible? Is it possible to use : smtp_host_lookup = ? Thank's a

Re: postfix and dns lookup

2011-02-04 Thread Noel Jones
On 2/4/2011 8:39 AM, Matteo Cazzador wrote: Hello , i've a question , i want do configure postfix to use external dns like (8.8.8.8) to resolve every domain (lookup for examples) for incoming mail and outgoing mail. I don't want to use local dns on postfix server is it possible? Is it possible

Re: postfix and dns lookup

2011-02-04 Thread Noel Jones
On 2/4/2011 8:42 AM, Noel Jones wrote: On 2/4/2011 8:39 AM, Matteo Cazzador wrote: Hello , i've a question , i want do configure postfix to use external dns like (8.8.8.8) to resolve every domain (lookup for examples) for incoming mail and outgoing mail. I don't want to use local dns on postfix

Re: postfix and dns lookup

2011-02-04 Thread Matteo Cazzador
Ok thank's in alternative is it possible use of disable_dns_lookups=yes to increase performance? My postfix server is a virtual mail server With mysql backend Il 04/02/2011 15:44, Noel Jones ha scritto: On 2/4/2011 8:42 AM, Noel Jones wrote: On 2/4/2011 8:39 AM, Matteo Cazzador wrote:

Re: postfix and dns lookup

2011-02-04 Thread Ralf Hildebrandt
* Matteo Cazzador mat...@netlite.it: Ok thank's in alternative is it possible use of disable_dns_lookups=yes to increase performance? Uhm, your server probably won't be able to send out mail out after that change, but at least it will do this quickly. My postfix server is a virtual mail

Re: postfix and dns lookup

2011-02-04 Thread Matteo Cazzador
Than'k a lot and excuse me if i'm not so clear: my local dns server , that is postfix server to, is used to filter navigation of client (by domain black list) so my local dns is under pressure and often mail give me error resolving dns while sending mail to external. I need to limitate this

Re: postfix and dns lookup

2011-02-04 Thread Ralf Hildebrandt
* Matteo Cazzador mat...@netlite.it: Than'k a lot and excuse me if i'm not so clear: my local dns server , that is postfix server to, is used to filter navigation of client (by domain black list) so my local dns is under pressure and often mail give me error resolving dns while sending mail

Re: postfix and dns lookup

2011-02-04 Thread Matteo Cazzador
hello here's my error log 192.168.0.10 = internal client ip now i've seen this strange mysql error maybe this is the real problem Feb 4 00:00:58 localhost postfix/trivial-rewrite[2579]: warning: mysql query failed: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and

Re: postfix and dns lookup

2011-02-04 Thread Ralf Hildebrandt
* Matteo Cazzador mat...@netlite.it: hello here's my error log 192.168.0.10 = internal client ip now i've seen this strange mysql error maybe this is the real problem Yes! Feb 4 00:00:58 localhost postfix/trivial-rewrite[2579]: warning: mysql query failed: Illegal mix of collations

Re: postfix and dns lookup

2011-02-04 Thread lst_hoe02
Zitat von Matteo Cazzador mat...@netlite.it: Than'k a lot and excuse me if i'm not so clear: my local dns server , that is postfix server to, is used to filter navigation of client (by domain black list) so my local dns is under pressure and often mail give me error resolving dns while

Re: postfix and dns lookup

2011-02-04 Thread Reindl Harald
Am 04.02.2011 16:32, schrieb lst_ho...@kwsoft.de: So you have a local caching-resolver on the Postfix box? If so it should not fail because of traffic as long as your system resources are not exhausted. If your system resources are exhausted using a different resolver does not help.

Re: postfix and dns lookup

2011-02-04 Thread Brian Evans - Postfix List
On 2/4/2011 10:50 AM, Matteo Cazzador wrote: Sure, thank's a lot everybody, i think the problem is related to: warning: mysql query failed: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) operation '=' that cause warning: transport_maps lookup

Re: Postfix anormal DNS lookup ?

2008-08-07 Thread Seblu
On Thu, Aug 7, 2008 at 1:49 AM, Wietse Venema [EMAIL PROTECTED] wrote: Seblu: and after a test my binary return a good resolution ./a.out server: got connection from 192.42.42.1 host=toto.titi and the function gethostbyaddr return also a good answer ! Ok, now you should learn to find

Re: Postfix anormal DNS lookup ?

2008-08-06 Thread Seblu
On Tue, Aug 5, 2008 at 12:56 PM, Wietse Venema [EMAIL PROTECTED] wrote: Seblu: [ Charset ISO-8859-1 unsupported, converting... ] Hello, i use postfix postfix 2.5.1 on an OpenBSD 4.3 and i have a stange behaviour (for me) with DNS lookup in logs. i've a local dns, which resolv 192.42.42.1

Re: Postfix anormal DNS lookup ?

2008-08-06 Thread Wietse Venema
Seblu: On Tue, Aug 5, 2008 at 12:56 PM, Wietse Venema [EMAIL PROTECTED] wrote: Seblu: [ Charset ISO-8859-1 unsupported, converting... ] Hello, i use postfix postfix 2.5.1 on an OpenBSD 4.3 and i have a stange behaviour (for me) with DNS lookup in logs. i've a local dns, which