[boost] Strange mail from this list?

From: Liu Jin (cpp_at_[hidden])
Date: 2005-05-08 02:46:54

Hi boosters,

Recently I've got a lot of empty messages (a sample below) from the
list.  Is there something wrong with my mail client, or it's normal
group traffic?

Thanks.

Jin

[sample]
X-From-Line: boost-bounces_at_[hidden]  Sun May 8 00:22:21 2005
Received: from milliways.osl.iu.edu (unknown [129.79.245.239])
        by 192.168.9.79 (Coremail) with SMTP id GMAWgzzrfELex+8A.1
        for <cpp_at_[hidden]>; Sun, 08 May 2005 00:22:21 +0800 (CST)
X-Originating-IP: [129.79.245.239]
aaazzzaaazzzaaazzzaaazzzaaazzz
X-Gnus-Mail-Source: pop:cpp_at_[hidden]
Message-Id: <427CEB3D.3B6F3C.00995>
Date: Sun, 8 May 2005 00:22:21 +0800 (CST)
From: boost-bounces_at_[hidden]
X-Content-Length: 1
Lines: 2
Xref: CPP_COMPUTER mail.personal:1109