i can sent out the mail from zimbra,
but when i reply the mail i sent that return follow message.
This is the Postfix program at host localhost.localdomain.
I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The Postfix program
: Host or domain name not found. Name service error
for name=localhost.localdomain type=A: Host not found