Zimbra and Ip Address

[GiuSe19]

Dear,
i have change my local ip address but now zimbra don't work and i can't go on my mail server.
The old ip address is 192.168.0.8 and now is 192.168.0.13.
I have try to change in /etc/hosts the ip address but it still don't work.
How i can resolve that?
thanks in advance

(sry for my english it isn't perfect )

[GiuSe19]

i have find the error ..

Jun 11 09:58:14 mail zimbramon[19117]: 19117:info: 2010-06-11 09:58:02, STATUS: mail.server.local: Apache: not running. No PID file found.
and
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/opt/zimbra/db/mysql.sock' (2)



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