RE: [Exim] Still have SMTP Command Timeout Error

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Autor: Don Hammer
Data:  
A: John W Baxter, Exim
Assumpte: RE: [Exim] Still have SMTP Command Timeout Error
I replaced the cables the rest of the path is the same that was working to
my old mail server with no problems

Don Hammer
Network Administrator
Evanite Fiber Corporation
1115 SE Crystal Lake Dr
Corvallis, OR 97333
(541) 753-0391 voice
(541) 753-0388 fax
hammerd@???


-----Original Message-----
From: exim-users-admin@??? [mailto:exim-users-admin@exim.org]On
Behalf Of John W Baxter
Sent: Tuesday, May 07, 2002 11:58 AM
To: Exim
Subject: Re: [Exim] Still have SMTP Command Timeout Error


At 12:26 -0500 5/7/2002, dman wrote:
>--
>On Tue, May 07, 2002 at 12:44:52PM -0400, Dave C. wrote:
>| On Tue, 7 May 2002, Don Hammer wrote:
>|
>| > I am still getting a SMTP command timeout error. I happens

intermittently.
>| > Sometimes the address will get through, other times it will not. I am
>| > considering adding a smtp_receive_timeout line to my config file. The
>| > documentation says the default is 5m, is this milliseconds? What would
>be a
>
>| Its possible the senders connection or server is just slow, or has some
>| sort of MTU or buffering problem.
>
>Maybe it is a dual-homed system with some low-quality ethernet cabling
>causing ~50% packet loss between it and the first router on the
>important segment?


Nice slow performance can also be achieved by forcing one end of a
perfectly good cable to 100meg/Full, and telling the other end to
negotiate. [Hint...the standards require the negotiating end to use half
duplex upon negotiation failure.]

It took us longer than it should have to understand the "late collision"
counts on the poorly-performing segment. We try not to do that any more.

  --John
--
John Baxter   jwblist@???      Port Ludlow, WA, USA


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