Usage: imapfront-auth PROGRAM [ ARGS ... ]
imapfront-auth provides IMAP authentication using CVM modules. The LOGIN command is authenticated via the CVM named by $CVM_SASL_PLAIN. If authentication succeeds, it sets up the environment and executes PROGRAM. It also offers RFC 1734 compliant AUTH support through cvm-sasl.
Connections are timed out after $AUTH_TIMEOUT (or $TIMEOUT if that is not set) seconds of inactivity (defaults to 1200 seconds or 20 minutes), or $AUTH_SESSION_TIMEOUT (or $SESSION_TIMEOUT if that is not set) seconds after the connection was established (defaults to 86400 seconds or 24 hours).
If $MAXAUTHFAIL is set, no more than the specified number of authentication failures may occur. After this limits are reached, the client is disconnected.
By default, the environment for the executed PROGRAM is set up for use with Courier IMAP. If $SETUP_ENV is set to dovecot, imapfront-auth will try to detect the type of mailbox in use and set $MAIL accordingly. See the Dovecot documentation for version 2 and version 1 for more details.