I have a rather big (600 user) problem with my server after trying to migrate from Ubuntu 8.04 32bit to CentOS5.5-64 bit.
Followed Network Edition: Moving from 32-bit to 64-bit Server - Zimbra :: Wiki to a t (except for the part about commercial certificates).
Although I must add that this problem started before the migrate, partly the reason for it.
The server is running on XenServer 5.6 with 2 CPUs, 2048MB RAN (768MB assigned during install)
The only 'add-on' in CentOS 5.5-64 is XenTools installed.
IP, hostname, everything exactly the same, running on same (Xen) server.


Now I have:
zmcontrol status
Host mail.true.co.za
antispam Running
antivirus Running
imapproxy Running
ldap Running
logger Running
mailbox Stopped
zmmailboxdctl is not running.
memcached Running
mta Running
snmp Running
spell Running
stats Running

I cannot find anything obviously wrong in the log files apart from
/opt/zimbra/log/zmmailboxd.out
Zimbra server reserving server socket port=110 bindaddr=my_ip_here ssl=false
Zimbra server reserving server socket port=995 bindaddr=null ssl=true
Fatal error: exception while binding to ports
java.net.SocketException: Unbound server sockets not implemented

With Zimbra stopped :
[zimbra@mail root]$ netstat -tulpn
(No info could be read for "-p": geteuid()=500 but you should be root.)
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN -
tcp 0 0 196.36.9.147:53 0.0.0.0:* LISTEN -
tcp 0 0 127.0.0.1:53 0.0.0.0:* LISTEN -
tcp 0 0 127.0.0.1:953 0.0.0.0:* LISTEN -
tcp 0 0 0.0.0.0:926 0.0.0.0:* LISTEN -
tcp 0 0 :::22 :::* LISTEN -
tcp 0 0 ::1:953 :::* LISTEN -
udp 0 0 0.0.0.0:44818 0.0.0.0:* -
udp 0 0 0.0.0.0:920 0.0.0.0:* -
udp 0 0 0.0.0.0:923 0.0.0.0:* -
udp 0 0 196.36.9.147:53 0.0.0.0:* -
udp 0 0 127.0.0.1:53 0.0.0.0:* -
udp 0 0 0.0.0.0:5353 0.0.0.0:* -
udp 0 0 0.0.0.0:111 0.0.0.0:* -
udp 0 0 196.36.9.147:123 0.0.0.0:* -
udp 0 0 127.0.0.1:123 0.0.0.0:* -
udp 0 0 0.0.0.0:123 0.0.0.0:* -
udp 0 0 :::47829 :::* -
udp 0 0 :::5353 :::* -
udp 0 0 fe80::6838:48ff:fe4:123 :::* -
udp 0 0 ::1:123 :::* -
udp 0 0 :::123 :::* -

No conflicting ports?

(With Zimbra running or stopped)
Even if I run something like :
[zimbra@mail root]$ zmprov ms mail.true.co.za zimbraImapCleartextLoginEnabled TRUE zimbraPop3CleartextLoginEnabled TRUE
[] INFO: I/O exception (java.net.ConnectException) caught when processing request: Connection refused
[] INFO: Retrying request
ERROR: zclient.IO_ERROR (invoke Connection refused, server: localhost) (cause: java.net.ConnectException Connection refused)

and /var/log/zimbra.log is full of:
Dec 4 00:06:46 mail postfix/error[9953]: 7C4795D01926: to=, relay=none, delay=337, delays=337/0.13/0/0.02, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to mail.true.co.za[196.36.9.147]:7025: Connection refused)


Also strange, don't know if it's relevant:

[zimbra@mail root]$ lsof | grep TCP
lsof: WARNING: can't stat() proc file system /var/named/chroot/proc
Output information may be incomplete.
lsof: WARNING: can't stat() ext3 file system /var/named/chroot/var/run/dbus
Output information may be incomplete.

[root@mail ~]# uname -a
Linux mail.true.co.za 2.6.18-194.26.1.el5xen #1 SMP Tue Nov 9 13:35:30 EST 2010 x86_64 x86_64 x86_64 GNU/Linux
[zimbra@mail root]$ zmcontrol -v
Release 6.0.9_GA_2686.RHEL5_64_20101115233514 CentOS5_64 FOSS edition.

$ hostname
mail.true.co.za
$ hostname -f
mail.true.co.za
$ nslookup mail.true.co.za
Name: mail.true.co.za
Address: 196.36.9.147
$ dig mx true.co.za
;; ANSWER SECTION:
true.co.za. 221 IN MX 10 mail.true.co.za.
;; ADDITIONAL SECTION:
mail.true.co.za. 2592000 IN A 196.36.9.147

$ cat /etc/hosts
127.0.0.1 localhost.localdomain localhost
196.36.9.147 mail.true.co.za mail


[zimbra@mail root]$ zmprov -l gs mail.true.co.za | grep Bind
zimbraImapBindOnStartup: TRUE
zimbraImapBindPort: 143
zimbraImapProxyBindPort: 7143
zimbraImapSSLBindOnStartup: TRUE
zimbraImapSSLBindPort: 993
zimbraImapSSLProxyBindPort: 7993
zimbraLmtpBindOnStartup: FALSE
zimbraLmtpBindPort: 7025
zimbraMemcachedBindPort: 11211
zimbraNotifyBindPort: 7035
zimbraNotifySSLBindPort: 7036
zimbraPop3BindAddress: 196.36.9.147
zimbraPop3BindOnStartup: TRUE
zimbraPop3BindPort: 110
zimbraPop3ProxyBindPort: 7110
zimbraPop3SSLBindOnStartup: TRUE
zimbraPop3SSLBindPort: 995
zimbraPop3SSLProxyBindPort: 7995


Read every post I could find, nothing helps.
Any help would very much be appreciated!

Ekkas