Date: Thu, 02 Jul 2009 12:25:20 -0700 From: Chuck Swiger <cswiger@mac.com> To: Alex Teslik <alex@acatysmoof.com> Cc: List freebsd-questions <freebsd-questions@freebsd.org> Subject: Re: intermittent failures with sendmail Message-ID: <A984F13D-F2FC-4DC7-8AA4-D85F37893EAD@mac.com> In-Reply-To: <20090702143840.M99932@acatysmoof.com> References: <20090702143840.M99932@acatysmoof.com>
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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<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu > 1300 > options=19b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4> > ether 00:1c:c0:36:85:62 > inet 24.205.141.134 netmask 0xfffffffc broadcast 24.205.141.135 > media: Ethernet autoselect (100baseTX <full-duplex>) > 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
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