On Wed, May 16, 2007 at 04:55:30PM +0700, sato x wrote:
> Dear guys,
>
> I have a qmail-ldap server that running well, except for its speed.
> When a client sends a message (a simple one with text only), it will
> take about 8 seconds for the email to disappear from the Outbox (I
> mean, the time needed for email to get sent).
>
> I tried to raise the number of users into 23, and sent email in the
> same time (a couple times). The average time needed to send those
> emails raised to 16, 25, 50 seconds. It even took over 1 minute for
> some users. The receivers were local and remote (e.g., gmail.com).
>
For smtp deliveries qmail-smtpd is used and depending on the settings
various DNS lookups and LDAP lookups are done. Slow behaviour is often a
sign that either your DNS is not correctly setup (like only the secondary
DNS server is working) or a problem with LDAP server (bad indexes or
reverse DNS lookups that do not work). Also have a look at your rbllist
file.
Also try to use telnet and issue the various SMTP commands by hand perhaps
you can identify which step takes way to long.
--
:wq Claudio
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