newbie question about bayesian filter

[Miguel]

Dear All, im using SA in a central system wide dedicated filter, so i 
dont have any account in it, the "clean" emails are forwarded to the 
final destination servers.
In this scenario, nobody will be training SA, so, does it make sense to 
use the bayesian filter at all? ,or SA will still use the bayesian 
filter from the day to day spam/ham hit ratios?

Thanks
---
Miguel