dovecot - Sep 2011 - Migrating a dovecot setup from one server to another

Hi All,

I have a server with a dovecot + postfix setup and unfortunately the
server is EOL'd. I have built a new ubuntu server out and I'm in the
process of migrating everything over. In migrating the dovecot setup
over, this is the list of items I have done:

install dovecot, postfix, etc on the new server
copy configuration files over
copy /var/spool and /var/mail over

Is there anything else I need to consider before switching MX records
to point to the new server?

Thanks,
James