I have installed Zimbra network Collaboration(3.1) suite succesfully on fedora 4.
But the thing is when I type
$zmcontrol start
$zmcontrol status
mta stopped
postfix is not running
(other is running)

my /etc/hosts is localhost.localdomain localhost mail.localhsot.localdomain mailhost

and when I type
$postfix start
it displays
postfix/postfix-script:warning:not owned by root:/opt/zimbra/postfix-2.2.9/conf/main.cf
postfix/postfix-script:staring the Postfix mail system
You have new mail in /var/spool/mail/zimbra

and I use "tail -f /var/log/zimbra.log", it displays
fatal:Queue report unavailable - mail system is down
warning:not owned by root:/opt/zimbra/postfix-2.2.9/conf/main.cf
staring the Postfix mail system
fatal:bind port 25:Address already in use

When I use "telnet localhost.localdomain 25", it displays
Connected to localhost.localdomain (
Escape character is '^]'
220 mail.localhost.localdomain ESMTP Sendmail 8.13.4/8.13.4; Sat, 12 Aug 2006 00:48:23 -0400

I use "ps aux|grep mta" and ps aux|grep postfix, no more other mta or postfix is running

I searched the forum, but i can not find a method to fix problem, please help me.