Postfix Virtual Mail Server using MySQL

[Dallin Jones]

I am trying to set up a Postfix virtual mail server storing the
usernames, passwords, and other info in a MySQL database. The sending
and recieving of email seems to be working like a champ. The directory
storing the Maildir data seems to be getting the mail. I can also send
email no problem, both through SMTP and through `telnet localhost 25`

The problem that I am running into, is that neither POP or IMAP seem
to work properly. Thunderbird seems to get looked into a "Host
contacted, sending login information" state. IMAP returns and error of
"The current command did not succeed. The mail server responded:
Unable to open this mailbox." I have tried tweeking all kinds of
things, but have been unable get this portion functioning properly.
Any ideas? I am not sure if it is failing with the MySQL queries, the
file permissions on the maildir or what.  Here is the authmysqlrc:

MYSQL_SERVER            localhost
MYSQL_USERNAME          mysqluser
MYSQL_PASSWORD          mysqlpassword
MYSQL_PORT              0
MYSQL_DATABASE          mysqldatabase
MYSQL_USER_TABLE        mail_users
MYSQL_LOGIN_FIELD       email
#MYSQL_CRYPT_PWFIELD     crypt
MYSQL_CLEAR_PWFIELD     password
MYSQL_UID_FIELD         1001
MYSQL_GID_FIELD         1001
MYSQL_HOME_FIELD        "/home/vmail"
MYSQL_MAILDIR_FIELD
CONCAT(SUBSTRING_INDEX(email,'@',-1),'/',SUBSTRING_INDEX(email,'@',1),'/')
MYSQL_WHERE_CLAUSE      access='y'

Thanks

Dallin