From owner-freebsd-current@FreeBSD.ORG Mon May 17 21:59:24 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D951116A4CE for ; Mon, 17 May 2004 21:59:24 -0700 (PDT) Received: from gw.catspoiler.org (217-ip-163.nccn.net [209.79.217.163]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2455443D58 for ; Mon, 17 May 2004 21:59:19 -0700 (PDT) (envelope-from truckman@FreeBSD.org) Received: from FreeBSD.org (mousie.catspoiler.org [192.168.101.2]) by gw.catspoiler.org (8.12.9p2/8.12.9) with ESMTP id i4I4xA7E019421; Mon, 17 May 2004 21:59:14 -0700 (PDT) (envelope-from truckman@FreeBSD.org) Message-Id: <200405180459.i4I4xA7E019421@gw.catspoiler.org> Date: Mon, 17 May 2004 21:59:10 -0700 (PDT) From: Don Lewis To: sven@dmv.com In-Reply-To: <1084799315.5817.6.camel@lanshark.dmv.com> MIME-Version: 1.0 Content-Type: TEXT/plain; charset=us-ascii cc: freebsd-current@FreeBSD.org Subject: Re: bind timeouts X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 May 2004 04:59:25 -0000 On 17 May, Sven Willenberger wrote: > On Mon, 2004-05-17 at 16:50 +1000, Dennis Kristensen wrote: >> On Tue, 2004-05-11 at 19:36, Cyrille Lefevre wrote: >> > On Mon, May 10, 2004 at 08:21:15PM -0700, David Wolfskill wrote: >> > > >From: "Cyrille Lefevre" >> > >> > CC -current >> > >> > > >for some times, I have some troubles to send e-mails, they >> > > >are returned w/ a host unknown error message (the relay)... >> > > >I spent a whole day to track down the problem w/o success. >> > > >... >> > > >however, it seems to be located around bind, but I don't know >> > > >if it's the client side or the server side which is broken, >> > > >maybe the TCP stack ! >> > > >> > > >I'm running -current last updated around 18 April 2004. >> > > >> > > I have been tracking both -STABLE and -CURRENT daily for quite a while; >> > > I don't recall seeing the symptoms you report. >> > >> > someone (Dennis Kristensen) reports me to have similar problems but >> > forget to CC -current :( >> >> After observing this for some days now (with no progress towards a >> solution), i think this might be a problem with the kernel rather than >> BIND. I have a 5.2.1-p5 system that shows the same symptons. It is >> lightly loaded and the above mentioned symptons start appearing after >> 1-3 days of uptime. A restart of BIND does not change anything, but af >> reboot of the system gives me another few days of correct operation. >> >> I hope the above can give someone more hints to what might be going on. >> I also hope to get some pointers to resource counters i can check to try >> an identify if something is leaking. >> >> The mail system is standard qmail, qmail-scanner with clamav and >> spamassassin and vpopmail - all from ports. >> >> Thanks for any hints or information in advance, >> Dennis Kristensen > > We had issues with qmail and bind playing nice together, with frequent > "CNAME_lookup_failed_temporarily" entries in the logfiles. Having the > mailserver use a nameserver that is running tinydns/dnscache solved the > problem (not really a big surprise knowing djb's disdain for the isc > product). Why you would start having this issue I don't know, but you > may want to try the tinydns/dnscache alternative. This appears to be a fairly common problem and can have a number of different causes. The above web search turns up a bunch of info on how to debug and fix the problem.