postgresql.org relay failing?

Joshua Drake and Marc Fournier,

I sent this to you a week ago and I'm still having problems.  Some
people just don't get the messages delivered; I just had a person who
couldn't subscribe to pgsql-es-ayuda because hosting.commandprompt.com
refuses to relay the confirmation message.

Please fix hosting.commandprompt.com or disable it, because some people
is losing mail from the lists.  I continually receive bounces like the
one below.  Note that this only happens with commandprompt.com; other
relayers work fine.

----- Forwarded message from Alvaro Herrera <alvherre@dcc.uchile.cl> -----

Date: Wed, 21 Apr 2004 21:38:30 -0400
From: Alvaro Herrera <alvherre@dcc.uchile.cl>
To: jd@commandprompt.com
Cc: scrappy@hub.org
Subject: postgresql.org relay failing?
Message-ID: <20040422013830.GA6361@dcc.uchile.cl>

Joshua, Marc,

I am starting to think that there's something weird about the
commandprompt.com relay server.  I own the pgsql-es-ayuda mailing list
and receive a lot of bounces that look similar to the one attached.
Observe the fact that hosting.commandprompt.com seems to be denying
relay:
(I get these with different mail addresses, somewhat randomly -- I think
the rest of the list gets the mail through different relays ...)

I'd appreciate you having a look into the problem.  Thanks.