Re: tcpserver's response time is too long..

["Cho Yoonbae" <itsfree@popsmail.com>]

Thanks for your article, Alberto.

http://cr.yp.to/ucspi-tcp/tcpserver.html
-H: Do not look up the remote host name in DNS; remove the environment variable $TCPREMOTEHOST. To avoid loops, you must use this option for servers on TCP port 53. 

I am using -H option to prevent look up remote hostname,
but It takes so long time(even 70-80 sec).

I tested on many remote host with different ISP.
but result was same.

I have managing another server with same debian distribution and qmail.
and that server is using -H option, too.
but This server's tcpserver is so as fast as commercial POP server.

I think I can't solve this proble with only -H option.
What things are remain I have to check?


----- Original Message ----- 
From: <alberto_rodriguez_lists@altavista.com>
To: "Cho Yoonbae" <itsfree@popsmail.com>; <debian-isp@lists.debian.org>
Sent: Sunday, April 22, 2001 9:27 PM
Subject: Re: tcpserver's response time is too long..


Hello Cho,

Well, i havent used so much tcpserver so -H i really dont remember what 
that mean.
I hope that mean a non-get-canonicalname becouse just u describe (your 
problem) sounds as a dns problem (tcpserver is waiting for the 
ip-resolution and the dns-server is not responding so quick it must).

I hope this help, it's just i have observed in other daemons, this could be 
a clue only.

Seeya

At 12:47 22/04/2001 +0900, Cho Yoonbae wrote:
>Hi, I'm using qmail with tcpserver.
>tcpserver's response time is too long.
>
>I input like following line,
>
>telnet my.server.domain110
>+OK <???.????@server.domain>
>
>it should open pop connection,
>but it takes too long time than other pop server.
>
>but when I try to do like that to localhost,
>I can see OK message as soon as I input.
>
>surely I executed tcpserver with -H option.
>
>What things are remain I have to check?
>
>I'm using debian woody
>bye
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