Wietse Venema:
> The attached patch numbers all postscreen(8) DNSBL requests, so
> that delayed DNSBL results for an old session are not added to the
> score when the same remote SMTP client has reconnected in the mean
> time.
>
> This error was rare enough that it should not affect real email.
>
> Use "postfix reload" after "make upgrade" on a running Postfix
> system. This is needed because the protocol between postscreen(8)
> and dnsblog(8) has changed.
Also fixed with postfix-2.9-20110313.
Wietse
