[exim] Queue manager

Hello to all

I have more email into my queue (i check under WHM)

I have make this modify with whm>exim configuration editor

> In the first box:
auto_thaw = 1d
ignore_bounce_errors_after = 1d
timeout_frozen_after = 1d

> In the last box
* * F,2h,10m; G,8h,1h,1.5;F,16h,8h

BUT queue is ever long and there are message from more than 28h (?)

The only way found for manage queue is to put manually this command (get
from helpdesk):
exim -bpru |awk '{print $3}' | xargs -n 1 -P 40 exim -v -M

...

But why my rules don't work ?
And why delivery is so low if queue run itself and speedy if I force
manually ?

Thanks x helps