To use the PureMessage Quarantine Digest function, you must add an alias to the alias file that matches the address specified in the approve_addr field of the pmx-qdigest.conf configuration file (or on the Digest Options page of the Quarantine tab in the PureMessage Manager). By default, this address pmx-auto-approve@mydomain.com.
Sendmail aliases are stored in the 'aliases' file (usually in the postfix/etc/ directory).
To configure Postfix aliases for quarantine digests: