Joe you have done a tremendous job distilling this setup down to it's basic needs. I really appreciate your having done this text files as a DB really is overkill for most small applications.

Two comments:

1 - I would include a link to an MD5 crypter for the convenience of the true newbie

2 - I had to add the slug [34] after the password in the password field to tell dovecot it was MD5 encrypted.

Thanks,

bex