From owner-freebsd-questions@FreeBSD.ORG Thu Jul 2 19:25:33 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 82234106568C for ; Thu, 2 Jul 2009 19:25:33 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from asmtpout022.mac.com (asmtpout022.mac.com [17.148.16.97]) by mx1.freebsd.org (Postfix) with ESMTP id 33DE18FC08 for ; Thu, 2 Jul 2009 19:25:33 +0000 (UTC) (envelope-from cswiger@mac.com) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Received: from cswiger1.apple.com ([17.227.140.124]) by asmtp022.mac.com (Sun Java(tm) System Messaging Server 6.3-8.01 (built Dec 16 2008; 32bit)) with ESMTPSA id <0KM6001C95Y85J30@asmtp022.mac.com> for freebsd-questions@freebsd.org; Thu, 02 Jul 2009 12:25:21 -0700 (PDT) Message-id: From: Chuck Swiger To: Alex Teslik In-reply-to: <20090702143840.M99932@acatysmoof.com> Date: Thu, 02 Jul 2009 12:25:20 -0700 References: <20090702143840.M99932@acatysmoof.com> X-Mailer: Apple Mail (2.935.3) Cc: List freebsd-questions Subject: Re: intermittent failures with sendmail X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 02 Jul 2009 19:25:34 -0000 Hi-- On Jul 2, 2009, at 8:33 AM, Alex Teslik wrote: > Jul 2 03:35:16 gouda sm-mta[40342]: n5ULKB0i064252: SYSERR(root): > timeout writing message to > b.mx.mail.yahoo.com.: Broken pipe > Jul 2 04:23:01 gouda sm-mta[47860]: n5ULKB0i064252: SYSERR(root): > timeout writing message to > e.mx.mail.yahoo.com.: Broken pipe > Jul 2 07:03:05 gouda sm-mta[53788]: n5ULKB0i064252: SYSERR(root): > timeout writing message to > d.mx.mail.yahoo.com.: Broken pipe > > I thought it might be an MTU problem: > > http://anthony.zerosandones.co.uk/?q=node/451 > > I set my MTU to 1300, but that hasn't helped. > > [gouda:root]/home/alex/acatysmoof.com/services# ifconfig -a > em0: flags=8843 metric 0 mtu > 1300 > options=19b > ether 00:1c:c0:36:85:62 > inet 24.205.141.134 netmask 0xfffffffc broadcast 24.205.141.135 > media: Ethernet autoselect (100baseTX ) > status: active > > DNS is working fine everywhere, so I don't think thats it. PTR is > fine, reverse lookups work fine. > > I've googled my brains out. Does anyone have any ideas? Intermittent network connectivity problems could be a firewall problem or an actual physical connectivity issue. Presumably your ISP can run a line quality test or something for your DSL/cable/T1/whatever link. tcpdump might give some insight, also.... Regards, -- -Chuck