Thanks for the Quick reply,
i have followed the link
http://wiki.zimbra.com/index.php?tit...tfixRecipients
in that i found the below message,
Note 3 from talk: files ownership should be set to root

ostfix before reloading postfix. This avoids annoying warning messages in logfile.
which file should be changed as root

ostfix before reloading
Thanks in advance,
Beeyes.