I would be interested to see tutorials like "Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 8.04 LTS)" and "The Perfect Server - Ubuntu Hardy Heron (Ubuntu 8.04 LTS Server)" in Solaris 10. It would be interesting to setup a server in Solaris 10 with webmin. Do you think it's a viable (meaning enterprise-level) solution?
I don't see why not. However I would go with implementing Sun CommSuite 6. It is free, it is well documented and their AJAX web client simply blows your mind. See here for more info http://wikis.sun.com/display/CommSuite/Sun+Java+Communications+Suite+6+on+a+Single+Host