Dominic Raferd: > On 10 January 2017 at 14:41, Wietse Venema <wie...@porcupine.org> wrote: > > Dominic Raferd: > >> # Example 1: response from gmail at end of smtp transmission is > >> checked using dns_filter_lookup - as intended, and not found - as > > > > $ postconf dns_filter_lookup > > postconf: warning: dns_filter_lookup: unknown parameter > > > > No surprise, then, that nothing is matched. > > > > (reposting to postfix-users...) > > Quite so, but finding a match once the test occurs is not the issue > here. My apologies for confusion caused by my typo putting 'dns' in > handwritten comment line when of course I meant 'dsn'. > > I am using smtp_delivery_status_filter=pcre:/etc/postfix/smtp_dsn_filter, > and this file does exist and is called to test the response after a > successful delivery - my first example is the simple control case. > > My puzzle is in the second example where no test is performed upon the > final response code.
If you wonder why a 421 response does not match your PCRE file, show your PCRE file. Wietse