Thanks. I modified the internal server to reply with 550 instead of 450 and now postfix is using 550 too :-)
Other question: Can I somehow have postfix only verify recipient addresses for internal mailservers? Right now it's doing this for outgoing emails too, verifying the recipient address, and I'm unsure if this isn't going to get us blacklisted because of it? Thanks ----- Original Message ----- From: "Matus UHLAR - fantomas" <uh...@fantomas.sk> To: "postfix-users" <postfix-users@postfix.org> Sent: Monday, May 20, 2019 9:01:56 AM Subject: Re: Postfix still rejecting with 450 while I have 550 in unverified_recipient_reject_code ? On 20.05.19 08:46, sandermo...@telenet.be wrote: >I have: > ># postconf |grep unverified_recipient_reject_ >unverified_recipient_reject_code = 550 >unverified_recipient_reject_reason = Unknown recipient address > >Yet, postfix is still rejecting with: > >May 20 08:38:27 mx10 postfix/smtpd[8934]: NOQUEUE: reject: RCPT from >host.com[x.x.x.x]: 450 4.1.1 <recei...@dom.com>: Recipient address rejected: >unverified address: Unknown recipient address; from=<sen...@dom2.com> >to=<recei...@dom.com> proto=ESMTP helo=<host.com> > > >What am I missing? I don't understand why it's rejecting with 450 instead of >550 ? the postfix FAQ linked from http://www.postfix.org/docs.html (Kyle Dent's Postfix resources) explains that: http://www.seaglass.com/postfix/faq.html#tmprsp 26. According to my configuration Postfix should be replying with a permanent error code (554), but it keeps sending a temporary one (454). Why is it doing that? You probably have soft_bounce = yes. Also, if there is a temporary DNS problem, Postfix automatically converts permanent errors to temporary ones. -- 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. WinError #99999: Out of error messages.
