How do I signoff HARP-L?

[Norman Lin <norlin@xxxxxxxxxxxxxxxxxxxxxx>]

Hello, all --

While I've found HARP-L to be interesting, I don't have the time nor
mailbox space to continue to receive it at this point.  However,
my attempts to signoff have failed.  I have sent mail to
LISTSERV@xxxxxxxxxxxxx (the address from which I originally signed
up) with "SIGNOFF HARP-L" in it, but I received back an error
message stating "WRITE PROTECTION VIOLATION; cannot process request,
forwarding request to list manager."

How can I sign off of this list?

-- 
 _____        __     __   _____    Norman Lin
      |         |      |       |   norlin@xxxxxxxxxxxxxxxxxxxxxxx (preferred)
   |  |  _      |__    |    |  |   nlin@xxxxxxxxxxxxxxxxxxxxxxxxxxx  (alt. 1)
   |  |   |        |   |    |  |   narc@xxxxxxxxxxxxxxxxxx           (alt. 2)