mail path

[Myron Seto]

I have been trying for a quite a while now
to e-mail a message to a friend at Lawrence
Berkeley Laboratory.
The problem I think, a very simple one, is
that ucbvax and the bellcore machines use
different mail symbols, i.e., bangs and
@'s.
The paths that I have tried are 
bellcore!ucbvax!lbl.berkeley.edu!tomlh
bellcore!decvax!ucbvax!lbl.berkeley.edu!tomlh
bellcore!ucbvax!tomlh at lbl.bitnet
etc.
etc.
All my mail were bounced back.
I am pretty sure ucbvax communicates with
the lbl machine.  But I am unsure how to
address the path correctly.  
Can anyone out there help me???
-- 
                  Myron Seto                     (201)758-2941
      {bellcore,cbosgd,clyde,cmcl2,ihnp4,mcnc,rutgers,ulysses}!nvuxl!myron