I have clear install Release (8.0.0.GA.5434.UBUNTU12.64 UBUNTU12_64 FOSS edition) on default ports. When i want install ssl wildcard certyficate i have this error:

Certyfikat nie został zainstalowany ze względu na błąd : system failure: exception executing command: zmcertmgr verifycrtkey comm /opt/zimbra/mailboxd/webapps/zimbraAdmin/tmp/current_comm.key /opt/zimbra/mailboxd/webapps/zimbraAdmin/tmp/current.crt with {RemoteManager: mx.x302.pl->zimbra@mx.x302.pl:22}
and second error:

Oct 15 14:39:02 mx postfix/smtp[3155]: 4C3611021C6: to=<root@mx.x302.pl>, relay=none, delay=0.05, delays=0/0.01/0.04/0, dsn=5.4.6, status=bounced (mail for mx.x302.pl loops back to myself)

My domain is x302.pl
root@mx:~# dig x302.pl any

; <<>> DiG 9.8.1-P1 <<>> x302.pl any
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 5255
;; flags: qr aa rd; QUERY: 1, ANSWER: 7, AUTHORITY: 0, ADDITIONAL: 6
;; WARNING: recursion requested but not available

;x302.pl. IN ANY

x302.pl. 86400 IN NS dns2.home.pl.
x302.pl. 86400 IN NS dns.home.pl.
x302.pl. 86400 IN NS dns3.home.pl.
x302.pl. 86400 IN SOA dns.home.pl. admin.home.pl. 1349900707 10800 3600 604800 3600
x302.pl. 3600 IN TXT "v=spf1 mx ~all"
x302.pl. 3600 IN A
x302.pl. 3600 IN MX 10 mx.x302.pl.

dns3.home.pl. 3600 IN A
mx.x302.pl. 3600 IN A
dns2.home.pl. 3600 IN A
dns.home.pl. 3600 IN A
dns.home.pl. 3600 IN A
dns2.home.pl. 3600 IN A

root@mx:~# cat /etc/hosts mx.x302.pl mx localhost.localdomain localhost

root@mx:~# hostname -f