I was more asking if it's even a good idea to add the null entry to the table? i would like to be a good postmaster but not want to relax policies for allowed sender addresses.
Am Di., 25. Sep. 2018 um 13:26 Uhr schrieb Wietse Venema < wie...@porcupine.org>: > > Stefan Bauer: > > Hi, > > > > I'm using smtpd_sender_restrictions = check_sender_access > > hash:/etc/postfix/allowed_sender > > > > to make sure, my senders only send out with pre-defined and allowed domains. > > > > Now i noticed, that if my users acknowledge "read confirmations" in > > clients, mails in the following form arrive at postfix: > > > > from=<> to=<m...@customer.tld> proto=ESMTP helo=<W8PPCN130916> > > > > and will be rejected as empty mail from is not allowed by > > check_sender_access. > > > > Howto deal with that? > > http://www.postfix.org/postconf.5.html#smtpd_null_access_lookup_key > > Wietse
