Simon Wilson:
> On my new Postfix 2.10 system incoming mail is slow to process (about
> 15 seconds end to end), and I think it is mainly because DNS queries
> are slowing things down.
>
> The server runs local caching DNS BIND, so it's as quick as I can get
> it on the slow Internet connection we are on.
>
> At the moment it seems like every step along the inbound email process
> is doing separate DNSBL lookups, and I'm wondering if this can be
> streamlined.
>
> Postscreen runs first and takes pretty much 6 seconds every time:
That is incorrect. The 6 seconds is only for clients that haven't
passed the pregreet test in the past 24 hours (the time is controlled
with the postscreen_greet_ttl parameter).
Wietse
