duplicate mail for outgoing.

Hi,All How to clean duplicate mail for outgoing to mailinglist ? such as... to : [EMAIL PROTECTED] cc : [EMAIL PROTECTED] and [EMAIL PROTECTED] in list [EMAIL PROTECTED] and [EMAIL PROTECTED] Now, [EMAIL PROTECTED] will be get mail 2 messages. How to [EMAIL PROTECTED] get 1 message ? ThankY

"failure notice" message

Hi,All Can I change content in "failure notice" message ? such as... Hi. This is the qmail-send program at gits.net.th. 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. Can I change it ? ThankYou+ O