Vmailmgr virtual user validation module
This module validates credentials using accounts in a vmailmgr system. It does domain lookups the same way qmail would to determine what system account and virtual account to use.
The root directory under which all the qmail configuration files are expected to be found. Defaults to "/var/qmail", which is the normal qmail install path.
The relative path to the password file located in the virtual domain's home directory. Defaults to "passwd.cdb".
The name of the default or "catch-all" account to look up if no match is found for the virtual account name. Defaults to "+", and is only used in lookup mode.