Mailman issue

I had the below issue, which was solved by:

1. postalias /etc/aliases
2. /etc/init.d/postfix restart

———- Forwarded message ———-
From: Mail Delivery Subsystem
Date: Sat, Nov 8, 2008 at 5:18 PM
Subject: Delivery Status Notification (Failure)
To: krcla.org@gmail.com

This is an automatically generated Delivery Status Notification

Delivery to the following recipient failed permanently:

LISTNAME@DOMAIN

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 550 550 5.1.1 : Recipient address rejected: User unknown in local recipient table (state 14).

—– Original message —–

Received: by 10.140.134.15 with SMTP id h15mr2702578rvd.221.1226193499415;
Sat, 08 Nov 2008 17:18:19 -0800 (PST)
Received: by 10.141.185.11 with HTTP; Sat, 8 Nov 2008 17:18:19 -0800 (PST)
Message-ID:
Date: Sat, 8 Nov 2008 17:18:19 -0800
From: “Yongho Kim”
Sender: krcla.org@gmail.com
To: LISTNAME@lists.krcla.org
Subject: testing
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary=”—-=_Part_41540_25685874.1226193499414″
X-Google-Sender-Auth: 2f92c36d2b07fdf9

——=_Part_41540_25685874.1226193499414
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

——=_Part_41540_25685874.1226193499414
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit

—– Message truncated —–