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[Reference:<_A3695@delegate-en.ML_>]
Newsgroups: mail-lists.delegate-en

[DeleGate-En] Re: Sub-Process turns to a zombie when using Delegate as an SMTP proxy
05 Apr 2007 00:06:33 GMT feedback@delegate.org (Yutaka Sato)
The DeleGate Project


Hi,

In message <_A3695@delegate-en.ML_> on 04/04/07(22:19:36)
you "Petros Skalkos" <pjehabdyi-mnhltaqdynjr.ml@ml.delegate.org> wrote:
 |I have downloaded v 9.6.0 pre7
 |
 |Command Line:
 |win-dg STLS=-fcl -P25 -vd SERVER=smtp://127.0.0.1:2525 PERMIT=smtp:*:*
 |ADMIN=peska@mydomain..gr 
 |
 |I got the log line :
 |04/04 15:21:51.38 [544] 99+0: NOT ended with .CRLF:
 |62eJKJMt2GSyBd3tQEi2BANpaAsCRTHNogDWTxpXa4F9EsoSS1Y4/IID+UaHEGVIAJhUANXnmyat
 |^M
 |
 |The problem is that the proccess [544] never closes after that. It stays
 |open forever
...
 |04/04 15:20:31.67 [544] 99+0: SMTP < MAIL FROM:<sme-industry@veth..gr>
 |SIZE=570579^M

This line shows the size of the message data, estimated by the client, is
about 570Kbytes.

 |04/04 15:20:34.52 [544] 99+0: SMTP < DATA^M
 |04/04 15:20:34.52 [544] 99+0: SMTP > 354 ok, send it; end with <CRLF>.<CRLF>^M
 |04/04 15:20:34.52 [544] 99+0: TMPFILE(SMTP-DATA-IN) = (28) C:/Program Files/DeleGate/tmp/dg544.2.1175689234
 |04/04 15:20:34.52 [544] 99+0: Close-On-Exec not supported
 |04/04 15:20:34.52 [544] 99+0: >>>TMPFILE(SMTP-DATA-IN)>>>720600[28]
 |
 |04/04 15:21:51.38 [544] 99+0: ## SMTP unbuffering slow DATA (25320B/77s).

This line shows the speed of data transfer from the client is very slow
(25320 bytes / 77 seconds = 300B/s, about 2400bps).
It will take about 2000 seconds (more than 30 minutes) to relay the message.

Your log in the former mail also show the slow transmission.
<_A3680@delegate-en.ML_>
>03/26 14:27:50.73 [1904] 23+0: ## SMTP unbuffering slow DATA (34310B/202s).

So it will be helpful to peep the IP packets from such client host and
observe the status of the TCP connection with tcpdump and netstat or so.

I added the log output in DeleGate/9.6.0-pre8 (which is released this
morning) to record SMTP DATA transfer periodically when it is slow.

Cheers,
Yutaka
--
  9 9   Yutaka Sato <y.sato@delegate.org> http://delegate.org/y.sato/
 ( ~ )  National Institute of Advanced Industrial Science and Technology
_<   >_ 1-1-4 Umezono, Tsukuba, Ibaraki, 305-8568 Japan
Do the more with the less -- B. Fuller

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