* Wietse Venema <postfix-users@postfix.org>: > Patrick Ben Koetter: > > There's an RFC for "Email Authentication Status Codes" > > <https://www.rfc-editor.org/rfc/rfc7372.txt> out, which specifies a > > dedicated > > status code "when an SMTP client's IP address failed a reverse DNS > > validation > > check, contrary to local policy requirements" (see: 3.3. Reverse DNS > > Failure > > Code): > > > > 3.3. Reverse DNS Failure Code > > > > Code: X.7.25 > > Sample Text: Reverse DNS validation failed > > Associated basic status code: 550 > > Description: This status code is returned when an SMTP > > client's IP address failed a reverse DNS > > validation check, contrary to local policy > > requirements. > > Reference: [RFC7372]; Section 3 of [RFC7001] > > Submitter: M. Kucherawy > > Change controller: IESG > > > > Should Postfix send that code when reject_unknown_reverse_client_hostname is > > in place? > > Thanks for keeping an eye on this. Yes, I suppose that Postfix > should adopt such status codes (make them configurable?), but there > is no need to do this for older releases.
Having them configurable with sane defaults would be nice for those who want to run their own status policy. I don't know how many do and if its worth the effort. p@rick -- [*] sys4 AG https://sys4.de, +49 (89) 30 90 46 64 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein
