On Jan 29, 2014, at 1:42 PM, Noel Jones <njo...@megan.vbhcs.org> wrote:

> On 1/29/2014 2:45 PM, Terry Barnum wrote:
>> Last night our mailserver networking seemed to die. This has happened 
>> approximately 3 times over the last year but I haven't been able to find 
>> what triggers it. In yesterday's mail log just before losing networking 
>> there is a verizon wireless connection attempt that postscreen rejects due 
>> to bare newlines and command pipelining. All connection activity stops 
>> immediately after this. Less than a minute later dovecot drops all imap 
>> connections due to inactivity. I don't see anything unusual in other logs 
>> around this time. The machine was unreachable for the next 10 hours (there 
>> are a couple local cron job email attempts). When I arrived this morning I 
>> could not reset the network interface. Restarting the machine cleared it. I 
>> know it's a long shot but could the command pipelining connection attempt 
>> have caused this?
> 
> It's unlikely the pipelined request caused your NIC to fail.
> 
> I think this is more likely a driver problem or a hardware problem.
> 
>  -- Noel Jones

(Oops, subject line typo, should be DOS, not OOS)

Thank you Noel. I agree but the chronology sure looked suspicious so I thought 
I'd ask.

-Terry

Terry Barnum
digital OutPost
http://www.dop.com

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