trouble with unscribe

[ST00000]

Hi,
   I wanted to be removed from GRASSU-LIST and sent a request to
GRASSU-REQUESTS at MAX.CECER.MIL and got a reply which says that it
couldn't find my bitnet address and therefore can not unscribe.
I also tried GRASSU-REQUESTS at MOON.cecer.mil and got the same thing.
I wanted to contact the manager but don't know his address.  Any
suggestions?
   Thank you.
C.CAO
st00 at siuemus