Our external spam filter sends a daily digest to any user who has had incoming email blocked/quarantined so that they can release any that were blocked in error. This comes from a do-not-reply address which does not accept return emails. Every time a user with an Out-of-office message set gets one of these spam digests a reply email gets generated that can never be delivered. This sits in the mail queue getting retried over and over until it expires.
Is there a way to have postfix simply drop these emails? Or to redirect them to an internal mailbox from where they could be deleted? I would prefer not to have to rely on every user creating a filter in their account to drop them.
Or if filters are the only way to go, does anyone have a suggested method to cycle through all accounts from zmprov and check for the existence of the filter, and add it if it is not already configured for that account?