Any suggestions for a small web based tool to manage virtual domains/users? I tried to look but didn't really find anything that didn't seem to be tightly integrated with Courier or Cyrus, and I'd rather not spend time writing yet another one of those. I would be using Postfix and Squirrelmail with LDAP or PostgreSQL.
On a somewhat related thought, I've been thinking about writing some kind of performance and statistics tool which would at least show the users who are logged in and how much CPU, memory and disk I/O they're eating so that you could see what's happening when load is too high. From Dovecot side that'd be done using a plugin. I'm not sure what the client side would be.. HTML might not be enough. Java maybe. Would Flash be too evil? :)