Hai Matus, Thank you for the reply, most apriciated. No, but its a "government" server, so i need to be very sure.. ;-) Thanks, i was looking in the wrong rfc.
Best regards, Louis > -----Oorspronkelijk bericht----- > Van: uh...@fantomas.sk > [mailto:owner-postfix-us...@postfix.org] Namens Matus UHLAR - fantomas > Verzonden: dinsdag 13 maart 2018 14:05 > Aan: firstname.lastname@example.org > Onderwerp: Re: question about envelop from. > > On 13.03.18 13:54, L.P.H. van Belle wrote: > >Im reading through rfc's but the following is still not clear for me. > > > >E-mail is rejected base on the envelop-from adres from a > mail-daemon with postfix + postfix-policyd-spf > > > >I saw the following in the postfix logs. > >Feb 7 00:00:16 hostname postfix/smtpd: Untrusted TLS > connection established from smtp1.xxxxxxxx.nl[x.xx.xxx.xx]: > TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits) > >Feb 7 00:00:16 hostname postfix/policy-spf: Policy > action=PREPEND Received-SPF: none (apmcsqa01.poort: No > applicable sender policy available) > receiver=hostname.domain.nl; identity=mailfrom; > envelope-from="MAILER-DAEMON@apmcsqa01.poort"; > helo=smtp1.xxxxxxxx.nl; client-ip=x.xx.xxx.xx] > >Feb 7 00:00:16 hostname postfix/smtpd: NOQUEUE: > reject: RCPT from smtp1.xxxxxxxx.nl[x.xx.xxx.xx]]: 450 4.1.8 > <MAILER-DAEMON@apmcsqa01.poort>: Sender address rejected: > Domain not found; from=<MAILER-DAEMON@apmcsqa01.poort> > > > >about this: > >envelope-from="MAILER-DAEMON@apmcsqa01.poort" > > who and why configured non-existing domain name there? > > >Im looking for the correct rfc where its described that the > part @apmcsqa01.poort should be @thesendingdomain.tld > > RFC 5321, section 2.3.5. Domain Names: > > Only resolvable, fully-qualified domain names (FQDNs) are > permitted > when domain names are used in SMTP. > > >where thesendingdomain.tld is also a resolvable domain, > because not it does > > not make sence because the now mailer-daemon wil never be > accepted because > > its non resolveable > > correct. that is the expected behaviour. > do you expect someone to accept mail from non-existing > (invalid) addresses? > -- > Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/ > Warning: I wish NOT to receive e-mail advertising to this address. > Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. > 10 GOTO 10 : REM (C) Bill Gates 1998, All Rights Reserved! > >