Since I restarted my dedicated server I have many bugs and my zimbra mail server don't work anymore :/

I have some doubt about the certificate because I know that's can be in relation with my starting bug, mta fail with smtp side not working.

So I tried to work on this side, of regenerating a new certificate, but since I did some try by following this guide
Problem with Certificate can cause MTA Failure - Zimbra :: Wiki

root@ns384526:/opt/zimbra/conf/ca# cd /opt/zimbra/ssl               
root@ns384526:/opt/zimbra/ssl# rm -R *
root@ns384526:/opt/zimbra/ssl# cd /opt/zimbra/conf/ca
root@ns384526:/opt/zimbra/conf/ca# rm -R *
root@ns384526:/opt/zimbra/conf/ca# /opt/zimbra/bin/zmcertmgr createca
** Creating directory /opt/zimbra/ssl/zimbra
** Creating directory /opt/zimbra/ssl/zimbra/ca
** Creating directory /opt/zimbra/ssl/zimbra/server
** Creating directory /opt/zimbra/ssl/zimbra/commercial
** Creating /opt/zimbra/ssl/zimbra/ca/zmssl.cnf...done
** Retrieving CA private key from ldap...failed.
** Retrieving CA cert from ldap...failed.
** Retrieving Commercial CA cert from ldap...failed.
** Creating CA private key /opt/zimbra/ssl/zimbra/ca/ca.key...done.
** Creating CA cert /opt/zimbra/ssl/zimbra/ca/ca.pem...done.
root@ns384526:/opt/zimbra/conf/ca# /opt/zimbra/bin/zmcertmgr deployca
** Importing CA /opt/zimbra/ssl/zimbra/ca/ca.pem into CACERTS...done.
** Saving global config key zimbraCertAuthorityCertSelfSigned...failed.
** Saving global config key zimbraCertAuthorityKeySelfSigned...failed.
** Copying CA to /opt/zimbra/conf/ca...done.
I have another bugs now ...

So Actually here it's the step I'm on :

zimbra@ns384526:~$ zmcontrol stop
Host ns384526.ovh.net
    Stopping stats...Done.
    Stopping mta...Done.
    Stopping spell...Done.
    Stopping snmp...Done.
    Stopping cbpolicyd...Done.
    Stopping archiving...Done.
    Stopping antivirus...Done.
    Stopping antispam...Done.
    Stopping imapproxy...Done.
    Stopping memcached...Done.
    Stopping mailbox...Done.
    Stopping logger...Done.
    Stopping zmconfigd...Done.
    Stopping ldap...Done.
You have new mail in /var/mail/zimbra
zimbra@ns384526:~$ zmcontrol start
Host ns384526.ovh.net
    Starting ldap...Done.
Unable to determine enabled services from ldap.
Enabled services read from cache. Service list may be inaccurate.
    Starting zmconfigd...Done.
    Starting logger...Failed.
Starting logswatch...ERROR: service.FAILURE (system failure: ZimbraLdapContext) (cause: javax.net.ssl.SSLHandshakeException sun.security.validator.ValidatorException: PKIX path validation failed: java.security.cert.CertPathValidatorException: signature check failed)
zimbra logger service is not enabled!  failed.

    Starting mailbox...Done.
    Starting memcached...Done.
    Starting imapproxy...Done.
    Starting antispam...Done.
    Starting antivirus...Done.
    Starting snmp...Done.
    Starting spell...Done.
    Starting mta...Done.
    Starting stats...Done.
zimbra@ns384526:~$ zmcontrol status
Unable to determine enabled services from ldap.
Enabled services read from cache. Service list may be inaccurate.
Host ns384526.ovh.net
    antispam                Running
    antivirus               Running
    imapproxy               Running
    ldap                    Running
    logger                  Stopped
        zmlogswatchctl is not running
    mailbox                 Stopped
        zmmailboxdctl is not running.
    memcached               Running
    mta                     Stopped
        postfix is not running
    snmp                    Stopped
        zmswatch is not running.
    spell                   Running
    stats                   Running
    zmconfigd               Running
And here the output of my hosts check =>

cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.    localhost.localdomain localhost    ns384526.ovh.net
# The following lines are desirable for IPv6 capable hosts
#(added automatically by netbase upgrade)
::1     ip6-localhost ip6-loopback
feo0::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
root@ns384526:/opt/zimbra/conf/ca# dig ns384526.ovh.net any

; <<>> DiG 9.7.3 <<>> ns384526.ovh.net any
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21447
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 10, ADDITIONAL: 0

;ns384526.ovh.net.        IN    ANY

ns384526.ovh.net.    79481    IN    A

ovh.net.        79480    IN    NS    dns11.ovh.net.
ovh.net.        79480    IN    NS    ns10.ovh.net.
ovh.net.        79480    IN    NS    dns15.ovh.net.
ovh.net.        79480    IN    NS    dns13.ovh.net.
ovh.net.        79480    IN    NS    ns11.ovh.net.
ovh.net.        79480    IN    NS    ns13.ovh.net.
ovh.net.        79480    IN    NS    ns12.ovh.net.
ovh.net.        79480    IN    NS    dns12.ovh.net.
ovh.net.        79480    IN    NS    dns10.ovh.net.
ovh.net.        79480    IN    NS    ns15.ovh.net.

;; Query time: 0 msec
;; WHEN: Tue Nov 15 10:16:27 2011
;; MSG SIZE  rcvd: 245

root@ns384526:/opt/zimbra/conf/ca# dig ns384526.ovh.net mx

; <<>> DiG 9.7.3 <<>> ns384526.ovh.net mx
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 52707
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;ns384526.ovh.net.        IN    MX

ovh.net.        600    IN    SOA    dns10.ovh.net. tech.ovh.net. 2011111508 86400 3600 3600000 600

;; Query time: 5 msec
;; WHEN: Tue Nov 15 10:17:02 2011
;; MSG SIZE  rcvd: 81

root@ns384526:/opt/zimbra/conf/ca# host `hostname`
ns384526.ovh.net has address

So if someone could help me I will he very happy ^^