Stefan,
Check the status of those bugs. Closed Fixed means what it says. Done and dusted.
Whitelist.... check the wiki for the correct syntax to use.
I seem to remember it can be a right plain whitelisting domains. Eg Microshaft are awful for reverse lookups on their servers because apparently there aren't enough IPs (read 'can't be arsed, use Exchange') and they have a myriad different names.
One point to remember..... the qpsmtpd plugins report their status, but it is up to other plugins to check that status, hence my original code in dnsbl to acknowledge whitelist status.
I can't remember if the block list plugin acknowledges the geoip one or if whitelist acknowledges geoip (probably not)
Let us know what happens.