"failure notice" message

[W. Ruangsang]

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+
OneR.