What is the most innovative and convenient way to set up delivery and manage virtual users on a Postfix mail server capable of handling 100,000 to 1,000,000 users?
- Mbox scares me because reading one file for an entire INBOX is an intensive process, right?
- Maildir is pretty cool but what if I have to do some maintenance? Then I'll have to worry about writing scripts to traverse multiple files.
- Are there any SQL solutions for storing this much mail or does that inflate the database too much thus making it cumbersome to backup?