Re: [ietf-smtp] Valid RFC5322 address
Ned Freed <ned.freed@mrochek.com> Sun, 03 May 2020 15:15 UTC
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Cc: SMTP Interest Group <ietf-smtp@ietf.org>
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Date: Sun, 03 May 2020 08:03:10 -0700
From: Ned Freed <ned.freed@mrochek.com>
In-reply-to: "Your message dated Sun, 03 May 2020 10:51:48 -0400" <5EAEDA84.1050408@isdg.net>
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To: Hector Santos <hsantos=40isdg.net@dmarc.ietf.org>
Archived-At: <https://mailarchive.ietf.org/arch/msg/ietf-smtp/7iLAFfVM0yIS2-3Kse9MpYNr8LE>
Subject: Re: [ietf-smtp] Valid RFC5322 address
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> Is this a valid address? > 08:04:33.934 C: MAIL > FROM:<github.agent:.github-hookshot/7431eee@winserver.com> > 08:04:34.712 S: 250 2.1.0 Ok > with the ':' and also '/' ?? No. The / is fine, but : is a special, and has to be quoted to be used in a local part. RFC 5322 section 3.2.3. > It appears to be accepted by various servers, including my own. Our server doesn't allow it. > This is related to a new project of handling a GitHub Webhook HTTP > notifications sent to my web server. The handler will the payload as > a local message using the address: > From: github agent: github-hookshot/7431eee > That comes from an operator defined macro: > From: github agent: {GITHUB-AGENT} > Which is read from the JSON payload. > If the setup happens to send the notification to an email address, > then the mail is exported for SMTP to sent out. > So I need to know if the address is valid. Its hard to decipher > whether it is or not from the RFC5322/RFC5321 BNF. It seems to read > the ':' and '/' characters are valid. addr-spec = local-part "@" domain local-part = dot-atom / quoted-string / obs-local-part dot-atom = [CFWS] dot-atom-text [CFWS] dot-atom-text = 1*atext *("." 1*atext) atext = ALPHA / DIGIT / ; Printable US-ASCII "!" / "#" / ; characters not including "$" / "%" / ; specials. Used for atoms. "&" / "'" / "*" / "+" / "-" / "/" / "=" / "?" / "^" / "_" / "`" / "{" / "|" / "}" / "~" Note tha absence of ":" in atext. The only way a ":" in a local-part is within a quoted-string: quoted-string = [CFWS] DQUOTE *([FWS] qcontent) [FWS] DQUOTE [CFWS] qcontent = qtext / quoted-pair qtext = %d33 / ; Printable US-ASCII %d35-91 / ; characters not including %d93-126 / ; "\" or the quote character obs-qtext Ned
- Re: [ietf-smtp] Valid RFC5322 address Hector Santos
- Re: [ietf-smtp] Valid RFC5322 address Ned Freed
- [ietf-smtp] Valid RFC5322 address Hector Santos
- Re: [ietf-smtp] Valid RFC5322 address Claus Assmann
- Re: [ietf-smtp] Valid RFC5322 address John C Klensin
- Re: [ietf-smtp] Valid RFC5322 address Hector Santos
- Re: [ietf-smtp] Valid RFC5322 address Hector Santos
- Re: [ietf-smtp] Valid RFC5322 address John C Klensin
- Re: [ietf-smtp] Valid RFC5322 address cketti
- Re: [ietf-smtp] Valid RFC5322 address John C Klensin
- Re: [ietf-smtp] Valid RFC5322 address Viktor Dukhovni