Masao Uebayashi <uebayasi@pultek.co.jp>  wrote:
 > Sorry for silly duplications.  I thought those mails was filtered as
 > spams. :(

They had international characters in one of the headers so they 
bounced as spams, but the list maintainer has to read all of his
spam just in case there are legitimate messages like these ones
which he should then forward to the list.