"Haifeng Guo" <[EMAIL PROTECTED]> wrote:
>I use ezmlm+ezmlm-idx as our mailling lists server,I have a lot of
>mailing lists on my server,some lists subscribe is over 30000,I use
>this lists to send our news,I found when I sent a message to the
>lists,the subscribe will take a long time to receive the mail(over
>serveral hours),I have compile qmail to support 255 qmail-remote and
>run qmail under tcpserver with 400 concurrent smtp connetion,how
>about it?
Does concurrencyremote stay near 255 during these times when
subscribers are waiting for messages? If so, and you have I/O capacity
to spare, apply the big-concurrency patch available from
www.qmail.org. (I'm running with a concurrencyremote of 500.) If not,
you may be I/O bound, or suffering from the qmail-send bottleneck,
whereby new injections (such as bounces) throttle outgoing mail. If
you're I/O bound, you'll have to rearrange or upgrade your hardware.
If you're hitting the qmail-send bottleneck, try a dual installation
where you have one qmail for sending list messages and another for
handling SMTP injections.
Do you run a caching nameserver (DJB's dnscache is the best) on the
list server?
Are you logging with daemontools?
-Dave
