The idea with one account pr. game is wonderful for play-by-email games. But I wouldn't want to do that from a CGI-interface: Creating accounts must for obvious reasons involve at least a sudo root operation. I would never let a CGI-script anywhere near that kind of power. Perhaps a chroot'ed approach could be found allowing for the one-accout-for-each-game approach.
As for storing game info, I use a mysql database. In there, I can do pretty much anything I want, without comprimising security. I could, e.g. store a backup for .2h files if I wished...
Another thing: Maybe it's just Sunday, but interest in this server has been quite low: Exactly one game has been created. For the current load, TCP/IP is DEFINITELY the way to go. Much easier to build/adminster than mail, and any server could run less than 5 games without sweating.
In the same vein: Feel free to pass the address of the server on to anywhere you think appropriate. The server has a limit (of currently 3), so there's no risk of overloading the server.
Also, if somebody have a pet option they just MUST have, please, don't hesitate to tell me. I havn't played all that much
Finally, response will be slow from me for an hour or so. I have a different kind of experiment underway: The making of filled chokolades.
Thanks for your interest in my little project