"B. Engineer" <[EMAIL PROTECTED]> wrote:
>On Thu, 30 Sep 1999, Dave Sill wrote:
>
>> You can run multiple installations of qmail on the system--preferrably
>> using queues on different controllers. The trick is evenly dividing
>> the labor.
>
>I would be interested in hearing more on this. I would have thought that
>it would not be possible as it needs to bind to port 25 but I can't argue
>with the author of lwq.
Sure, you can argue with me. I'm just another qmail user. I'm even
wrong now and then. :-)
You're right that port 25 can only be serviced by a single
installation (at a time), but there can be any number of installations
processing locally-injected messages or messages rerouted by the
installation listening to port 25.
For a very busy mail hub, one approach would be two installations: one
handling messages coming in via port 25, another handling messages
injected by qmail-inject/sendmail.
For a very busy mail generator (list server, opt-in "spammer", etc.),
multiple installations can be used for locally injected messages by
having different sending processes use different copies of
qmail-inject.
An insanely busy hub could have multiple installations take turns
listening to port 25, or have the listening installation reroute to
other installations. But at this level of load, it makes more sense to
use multiple boxes and MX's.
-Dave
