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(at)dcc(dot)uchile(dot)cl> -----

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