> On May 7, 2017, at 3:42 PM, Andreas Schamanek <scham...@fam.tuwien.ac.at> > wrote: > >> /etc/postfix/main.cf: >> smtpd_reject_unlisted_sender = yes > > Is there a way to test-run this similar to warn_if_reject?
http://www.postfix.org/postconf.5.html#smtpd_reject_unlisted_sender leads you to http://www.postfix.org/postconf.5.html#reject_unlisted_sender -- Viktor.
