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:


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
        ether 00:1c:c0:36:85:62
        inet netmask 0xfffffffc broadcast
        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....


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