hostname in logs

[ttvilaplana]

First, hello everyone. I'm new to this forum, so if I posted this thread in wrong one, i'm sorry.

I've change the hostname in the server.

old hostname --> oldserver.example.com
new hostname --> newserver.example.com

1st - I've modify /etc/hostname
2nd - I've modify /etc/hosts

127.0.0.1 localhost.localdomain localhost
127.0.1.1 newserver.example.com newserver
xx.xxx.xx.xx newserver.example.com newserver

3rd - I've run /etc/init.d/hostname.sh stop & etc/init.d/hostname.sh start
4th - test:
run hostname --> newserver.example.com
run hostname -f -->newserver.example.com

I change also the /etc/postfix/main.cf files replacing "mydestination" and and both SSL certificates (IMAP and POP) replacing "CN" value.

Every thing seems ok, but every log files are still showing oldserver.example.com.

It's necessary reboot the server?

Thanks

[till]

It's necessary reboot the server?

Yes, please reboot the server.