We are running BM3.7 SP2 on a Netware 5.1 server and a GroupWise 6 SP2

server with GWIA 6.0.2 on another Netware 5.1 machine.

Everything works fine but from time to time the GroupWise server hangs
and
on our Bordermanager machine the packet receive buffers climb to the
maximum (we tried to set it to 25000 but it still goes from 2000 to
25000
in a very short time).

What could be the cause?