On 11/28/2015 3:16 PM, Michael Grimm wrote: > Viktor Dukhovni <postfix-us...@dukhovni.org> wrote: > >> On Fri, Nov 27, 2015 at 09:26:20PM -0500, David Mehler wrote: >> >>> In particular can I eliminate the rbl checks in >>> smtpd_recipient_restrictions since they're going in the postscreen >>> setup? >> >> Keep both. > > Please ignore my ignorance, but: why would one keep both? > > Thanks and with kind regards, > Michael >
Postscreen caches responses. In some cases, the "live" query done in smtpd may give a different answer. This is useful for newly listed sites that contact you frequently during a spam run. For "fresh" queries, the answer will be in your DNS cache, so won't add significant overhead. The short answer is to keep both. -- Noel Jones
