> On May 14, 2018, at 1:54 PM, jack <[email protected]> wrote: > >> Postfix will query hash (btreem, dbm, lmdb, ldap, etc.) table >> multiple times, first with the full IP address and then with prefixes >> of the IP address. With your example of 5.188.9.2 the queries would >> be: >> >> 5.188.9.2 >> 5.188.9 >> >> There would be more queries if there is no match. > > So I have been unable to discover that information anywhere on the > postfix.org site. Also, I have a suspicion that I may have already asked > this question, many years ago, received an answer, and forgotten it.
Look for "HOST NAME/ADDRESS PATTERNS" in http://www.postfix.org/access.5.html The http://www.postfix.org/postconf.5.html#check_client_access docs point you at access(5), so this is not exactly hiding... -- Viktor.
