> I am using Mhonarc to archive a mail list. The current archive is now 5000
> messages.
>
> First, I was wondering if there is a practical limit to the size
> of an archive mhonarc can handle (for performance reasons mainly).
It all depends on how long your users are willing to wait when they
load the main index page. :)
In my experience, indices with more than 1500 messages start generating
complaints from our user base.
> Second I am now looking for "automatic" solutions to break this archive in
> parts (on a per semester or per year basis).
If you're doing it based on time, your best be is either to have an
automatic job move the archives to a new directory, or if you're under
Unix, preprocess the messages with procmail or a similar mechanism.
Chris