Every time I send something to the list, I get back a "failure notice"...

…even though my posting shows up just fine. What’s going on?

Here’s the beginning of the last notice I got.

Return-Path: <>
Received: from tango.SoftHome.net (204.144.231.49) by motu.com
with SMTP (Eudora Internet Mail Server 1.3); Mon, 20 Mar 2000
20:33:59 -0400
Received: (qmail 13758 invoked for bounce); 21 Mar 2000 01:27:25 -0000
Date: 21 Mar 2000 01:27:25 -0000
From: xxxxx@softhome.net
To: xxxxx@motu.com
Subject: failure notice
Message-ID:
>
> Hi. This is the qmail-send program at softhome.net.
> 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.
>
> :
> Recipient’s mailbox is full, message returned to sender. (#5.2.2)
>

[rest snipped]