[exim] exim on 10.4.3 oddity

unable to set gid=6 or uid=501 (euid=25)

known problem, but it only happens on 10.4.3 and:

-rwsr-xr-x 1 root mail 823628 Dec 8 16:57 exim-4.60-2

this is affecting clearly local deliveries on this test machine and
restarting exim (after kill -1 it loses the ability of opening port 25).

Is it just late or there are known issues? I haven't tried an older
version on 10.4.3, but I think I'll do that tomorrow unless someone
already knows the answer.

(note that I am, hopefully, sending using this test version)
Thanks

Giuliano