From owner-freebsd-hackers Thu Aug 22 11:47:29 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 38A7437B400 for ; Thu, 22 Aug 2002 11:47:27 -0700 (PDT) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9991143E70 for ; Thu, 22 Aug 2002 11:47:26 -0700 (PDT) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.12.5/8.12.5) id g7MIlNB7075231; Thu, 22 Aug 2002 13:47:23 -0500 (CDT) (envelope-from dan) Date: Thu, 22 Aug 2002 13:47:23 -0500 From: Dan Nelson To: Dan Langille Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: why does this sendmail connection take so long? Message-ID: <20020822184722.GB6095@dan.emsphone.com> References: <3D64EA4F.13423.6AA8F51E@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3D64EA4F.13423.6AA8F51E@localhost> X-OS: FreeBSD 5.0-CURRENT X-message-flag: Outlook Error User-Agent: Mutt/1.5.1i Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG In the last episode (Aug 22), Dan Langille said: > I'd normally attribute this problem to DNS, but I can't track down > what DNS problem is occuring. Note the lag between the first event > and the next. Any suggestions? A good way to rule out (or rule in) DNS problems is to tcpdump -n port 53 while you send the message. If you're running a local named, be sure and run two tcpdumps; one for lo0, and one for your ethernet interface. -- Dan Nelson dnelson@allantgroup.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message