[pfx] Re: Headers and Forwarding
Viktor Dukhovni via Postfix-users: > Apparently, reading RFC5321 and RFC5322 is too tedious. Reading RFCs is so old-school. It's much easier to be ignorant. Wietse ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
[pfx] Re: Headers and Forwarding
> On Apr 8, 2023, at 13:15, Viktor Dukhovni via Postfix-users > wrote: > > On Sat, Apr 08, 2023 at 12:16:30PM -0700, Doug Hardie via Postfix-users wrote: > Are there any others and how close am I? >>> >>> >>> https://www.iana.org/assignments/mail-parameters/mail-parameters.xhtml#mail-parameters-7 >> >> Wow, I never would have guessed there would be that many. Thanks. > > For SMTP (as opposed to LMTP), you were only off by a factor of ~2, > there's a second "base" value of "UTF8SMTP". The full set for SMTP is: > >SMTP Simple Mail Transfer Protocol [RFC5321] >ESMTP SMTP with Service Extensions [RFC5321] >ESMTPA ESMTP with AUTH [RFC3848] >ESMTPS ESMTP with STARTTLS [RFC3848] >ESMTPSA ESMTP with both STARTTLS and AUTH [RFC3848] >UTF8SMTP ESMTP with SMTPUTF8 [RFC6531] >UTF8SMTPA ESMTP with SMTPUTF8 and AUTH [RFC4954][RFC6531] >UTF8SMTPS ESMTP with SMTPUTF8 and STARTTLS [RFC3207][RFC6531] >UTF8SMTPSA ESMTP with SMTPUTF8 and both STARTTLS and AUTH > [RFC3207][RFC4954][RFC6531] > > These are correctly used in Postfix and a few other MTAs, and then > there's Microsoft, where even the basic atom syntax is violated: > >with Microsoft SMTP Server > > or MessageLabs: > >with AES128-GCM-SHA256 encrypted SMTP > > c.f. > >https://www.rfc-editor.org/rfc/rfc5321#section-4.4 > > Protocol = "ESMTP" / "SMTP" / Attdl-Protocol > Attdl-Protocol = Atom > ; Additional standard names for protocols are > ; registered with the Internet Assigned Numbers > ; Authority (IANA) in the "mail parameters" > ; registry [9]. SMTP servers SHOULD NOT > ; use unregistered names. > > other violations are less severe: > >with HTTP >with mapi >with bizsmtp >with ngmta Thanks for that info. I don't think that will affect me as the first Received header in the message (last in time) will always be from postfix . I only need postfix's queue id so I can trace what happened if required. >... > > Apparently, reading RFC5321 and RFC5322 is too tedious. Reading is not tedious. You can't force everyone to use your software if you follow the standards. ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
[pfx] Re: Headers and Forwarding
On Sat, Apr 08, 2023 at 12:16:30PM -0700, Doug Hardie via Postfix-users wrote: > >> Are there any others and how close am I? > > > > > > https://www.iana.org/assignments/mail-parameters/mail-parameters.xhtml#mail-parameters-7 > > Wow, I never would have guessed there would be that many. Thanks. For SMTP (as opposed to LMTP), you were only off by a factor of ~2, there's a second "base" value of "UTF8SMTP". The full set for SMTP is: SMTP Simple Mail Transfer Protocol [RFC5321] ESMTP SMTP with Service Extensions [RFC5321] ESMTPA ESMTP with AUTH [RFC3848] ESMTPS ESMTP with STARTTLS [RFC3848] ESMTPSA ESMTP with both STARTTLS and AUTH [RFC3848] UTF8SMTP ESMTP with SMTPUTF8 [RFC6531] UTF8SMTPA ESMTP with SMTPUTF8 and AUTH [RFC4954][RFC6531] UTF8SMTPS ESMTP with SMTPUTF8 and STARTTLS [RFC3207][RFC6531] UTF8SMTPSA ESMTP with SMTPUTF8 and both STARTTLS and AUTH [RFC3207][RFC4954][RFC6531] These are correctly used in Postfix and a few other MTAs, and then there's Microsoft, where even the basic atom syntax is violated: with Microsoft SMTP Server or MessageLabs: with AES128-GCM-SHA256 encrypted SMTP c.f. https://www.rfc-editor.org/rfc/rfc5321#section-4.4 Protocol = "ESMTP" / "SMTP" / Attdl-Protocol Attdl-Protocol = Atom ; Additional standard names for protocols are ; registered with the Internet Assigned Numbers ; Authority (IANA) in the "mail parameters" ; registry [9]. SMTP servers SHOULD NOT ; use unregistered names. other violations are less severe: with HTTP with mapi with bizsmtp with ngmta ... Apparently, reading RFC5321 and RFC5322 is too tedious. -- Viktor. ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
[pfx] Re: Headers and Forwarding
> On Apr 8, 2023, at 11:59, Viktor Dukhovni via Postfix-users > wrote: > > On Sat, Apr 08, 2023 at 11:51:06AM -0700, Doug Hardie via Postfix-users wrote: > >> A couple of questions. Looking in the postfix generated Received: >> header, the SMTP id often has a few other letters included: ESMTPA >> etc. I am guessing that the extra letters mean: >> >> E - EHLO used rather the HELO >> S - SSL was used in the connection >> A - the originator was authenticated >> >> Are there any others and how close am I? > > > https://www.iana.org/assignments/mail-parameters/mail-parameters.xhtml#mail-parameters-7 Wow, I never would have guessed there would be that many. Thanks. > >> When the alias file pipes an email to a program, does it expect any >> response from that program, > > Only a 0 exit status code, in which case the program should not generate > any output. > >> or would it do anything with a response? > > If an error occurs some of the output might be included in the bounce. Now that sounds like a useful feature. I'll have to try it out. -- Doug ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
[pfx] Re: Headers and Forwarding
On Sat, Apr 08, 2023 at 11:51:06AM -0700, Doug Hardie via Postfix-users wrote: > A couple of questions. Looking in the postfix generated Received: > header, the SMTP id often has a few other letters included: ESMTPA > etc. I am guessing that the extra letters mean: > > E - EHLO used rather the HELO > S - SSL was used in the connection > A - the originator was authenticated > > Are there any others and how close am I? https://www.iana.org/assignments/mail-parameters/mail-parameters.xhtml#mail-parameters-7 > When the alias file pipes an email to a program, does it expect any > response from that program, Only a 0 exit status code, in which case the program should not generate any output. > or would it do anything with a response? If an error occurs some of the output might be included in the bounce. -- Viktor. ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
