On 09/02/2011 11:34 AM, Marcin Orlowski wrote:
> hi,
>
> I got odd issue with one of my smtp box and I got some problems
> finding the culprit out. The problem is that it takes
> ages for smptd prompt to appear:
>
> # telnet localhost 25
> Trying 127.0.0.1...
> [... wait, wait, wait ...]
> Connected to localhost.
> Escape character is '^]'.
> 220 Welcome to mail delivery server ESMTP
>
> The wait time vary but is often 60+ secs, so MUA with default 60 secs
> timeout complain.
>
> All is started that way:
>
> ${TCPSERVER} -v -l ${HOSTNAME} -H -R -c 500 -u 1004 -g 1003 0 smtp
> ${SPAMDYKE} ${SMTPD} ${MYNAME} ${CHECKPASSSMTP} /bin/true 2>&1 | cat
> /dev/null&
>
> (Variables are fine), my name is `hostname` output and resolves both
> ways. Sometimes (frequently enough to not ignore it) I also see
> max number of instances of app invoked by tcpserver (usually
> 503) but at the same time the log does not indicate such
> increase of traffic (usually there are 30-40). At the same time there's
> said delay, launching ./qmail-smtp by hand shows no delay, so I suspect
> tcpserver or spamdyke steps (or something they relay on). My first guess
> was dns, but there's caching dns running locally plus I disabled
> whatever I could to make tcpserver staying away from resolving anything.
> Spamdyke config holds dns-level=none for the same purpose. Any ideas?
>
> Regards,
I'd suspect DNS as well. Did you double check your /etc/resolv.conf
file, and be sure that dns requests are handled locally?
--
-Eric 'shubes'
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