Another tool that most people do not know of is WebCatalog http://www.pacific-coast.com Originally developed for E-Commerce it can do a whole lot more. The language is much easier that PHP/SQL/Perl etc and best of all the database and templates are cached in Ram. It will not hit the disk unless the database is written to. I serve one site with over 2 mil hits a day on it.
Another solution is to look at Communigate mailserver from http://www.stalker.com It allows you to cluster your mail server to multiple servers with very little fuss.
Slashdot Mirror
Another tool that most people do not know of is WebCatalog http://www.pacific-coast.com Originally developed for E-Commerce it can do a whole lot more. The language is much easier that PHP/SQL/Perl etc and best of all the database and templates are cached in Ram. It will not hit the disk unless the database is written to. I serve one site with over 2 mil hits a day on it.
Another solution is to look at Communigate mailserver from http://www.stalker.com
It allows you to cluster your mail server to multiple servers with very little fuss.