Help with unsubscribing

["Alistair Christie" <alistair.christie@memex.com>]

Sorry to mail everyone this, but I've tried all other methods I can think of
right now.

How can I unsubscribe from this mailing list?

I've successfully unsubscribed from docbook-apps, but I can't get off the
docbook list.

http://www.oasis-open.org/committees/docbook/mailinglist/guidelines.html#d0e
161
says:
"To unsubscribe from the DocBook mailing list, send mail to
<docbook-request@lists.oasis-open.org> with “unsubscribe” as the body of
your message."

However, when I try this I get the following failure message:

"Hi. This is the qmail-send program at mail.oasis-open.org.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<docbook-request@lists.oasis-open.org>:
ezmlm-manage: fatal: Sorry, I've been told to reject all requests (#5.7.2)"


I've also tried emailing the "List-Unsubscribe" address in the header of
messages from this list:
  docbook-unsubscribe@lists.oasis-open.org
with no success either.