On Mon, Dec 01, 2008 at 11:05:44AM -0500, Justin Piszcz wrote:
> Quick question--
>
> Nov 30 17:39:03 p34 postfix/smtpd[15257]: 6B3A310676:
> client=localhost.localdomain[127.0.0.1]
> Nov 30 17:39:03 p34 postfix/cleanup[15260]: 6B3A310676:
> message-id=<[EMAIL PROTECTED]>
> Nov 30 17:39:03 p34 postfix/qmgr[18872]: 6B3A310676:
> from=<[EMAIL PROTECTED]>, size=430, nrcpt=1 (queue active)
> Nov 30 17:39:03 p34 postfix/smtpd[15257]: lost connection after QUIT from
> localhost.localdomain[127.0.0.1]
> Nov 30 17:39:03 p34 postfix/smtpd[15257]: disconnect from
> localhost.localdomain[127.0.0.1]
>
> Why would it lose the connection from localhost when sending a test message
> from the 3dm2 web interface? Should I escalate this to 3ware support/or
> is there a parameter I can change to fix this/what is causing this?
Harmless noise, the client dropped the connection after sending "QUIT" and
the server "221" response could not be sent down an already closed socket.
This is a race. For clients with high enough network latency, the server
sends 221 before the TCP 3-way close handshake completes. For clients
that are close-by (e.g. localhost), the server can "lose" the race, and
find the socket already closed. Use of milters to inspect the QUIT command
can slow down the server further and make this more likely.
There is nothing wrong with lost connections after QUIT. Newer versions
of Postfix only log "lost connection" in the SMTP server during data
transfer or when sending the "." response. The client is free to
disconnect without "QUIT" at all other SMTP protocol stages.
Sufficiently new Postfix releases will not log this condition.
--
Viktor.
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