If you are upgrading to Messaging Server 6 2005Q4 from an earlier release, follow the upgrade instructions in the Sun Java Enterprise System 2005Q4 Upgrade Guide as well as the Sun Java Enterprise System 2005Q4 Release Notes.
If you are installing Messaging Server for the first time or upgrading from an earlier version of Messaging Server, ensure that you have the following entry in /etc/hosts file on your Solaris system:
<ip-of system> <FQHN> <hostname>
For Example, 220.127.116.11 budgie.siroe.varrius.com budgie
On Solaris 10 platforms, you not only have to add the Fully Qualified Domain Name (FQDN) to the /etc/hosts file, but also to the /etc/inet/ipnodes file. Otherwise, you will get an error indicating that your host name is not a Fully Qualified Domain Name.