[Mimedefang] Upgrading Bayes DBs

[Nels Lindquist]

On 22 Jun 2005 at 15:50, Richard Whelan wrote:

<snip>

> I'm now trying to use the sa-learn script to resync instead. The old
> bayes db is around 83 Mb, containing over 80000 for ham and the same
> again for nham. 

That's an awfully large database for that number of e-mails.  Have 
you put any bayes_* options in your sa-mimedefang.cf file which 
override the defaults for bayes expiry, database size, etc.?  Note 
that there's no advantage to letting your bayes database grow without 
bound; it'll end up populated primarily by single-occurrence tokens 
that never show up again.  My bayes system has processed 
substantially more messages than yours, but the dabase files only 
make up around 25 MB, with the tokens file comprising only 5 MB of 
that.

If you *haven't* changed any of the defaults, you may have run into a 
bug in the SA 2.6x expiry system which resulted in no tokens ever 
being expired.  Do you have SA 2.6x installed anywhere, or another 
system you can install it on to do the processing?  
Try (using the 2.6x version) "sa-learn -D --force-expire" and see if 
the expiry actually works.  Getting the database files down to a more 
reasonable size will make the conversion to SA 3.x bayes much 
smoother.

Once you've got a reasonable set of db files you should just be able 
to transfer them to the appropriate location for SA 3.x and issue a 
"sa-learn --sync" to convert.

----
Nels Lindquist <*>
Information Systems Manager
Morningstar Air Express Inc.