about header address parsing

[TACHIBANA Masashi]

Hi,

Thank you for your reply.

--
Tachibana

----- Original Message -----
> On Tue, 1 Sep, 2020 at 09:59, Timo Sirainen <timo at sirainen.com> wrote:
> > On 1. Sep 2020, at 6.24, TACHIBANA Masashi <tachibana at qualitia.co.jp> 
> > wrote:
> >> 
> >> Hi,
> >> 
> >> Is this expected or not?
> >> 
> >> From: user1 at fuga.example.com <user1 at example.com>
> >> To: user2 at hoge.example.com <user2 at example.com>
> >> ↓
> >> a uid fetch 43055 (envelope)
> >> * 1860 FETCH (UID 43055 ENVELOPE ("Thu, 30 Jul 2020 13:52:59 +0900" 
> >> "test1" ((NIL NIL "user1" "fuga.example.com")) ((NIL NIL "user1" 
> >> "fuga.example.com")) ((NIL NIL "user1" "fuga.example.com")) ((NIL 
> >> NIL "user2" "hoge.example.com")) NIL NIL NIL 
> >> "<WLXvFmpAZFNeQbPPITjRwimDyamnBm1 at test>"))
> > 
> > This is an invalid email address, so it's neither correct nor 
> > incorrect to have this output. But this reminded me that I was going 
> > to discuss about this with other IETF people. Lets see what others 
> > think: 
> > https://mailarchive.ietf.org/arch/msg/extra/sqRTdsV_DGBhHu2ghdCDFo_pM8Q/
> 
> While it is an invalid email address, in the exact same vein as 
> <https://dovecot.org/pipermail/dovecot/2020-August/119658.html> 
> Dovecot's approach is unhelpful here, and means MUAs must download 
> complete headers rather than reply on envelope address structures. In 
> fact, unlike in the linked case this example this is actually a 
> security vulnerability: http://mailspolit.com/
> 
> As a MUA maintainer, I'd really like to see Dovecot take a more 
> proactive approach to sending useful values in envelope address 
> structure, so we don't have to download headers all the time.
> 
> 
> >> From: "user1 at fuga.example.com" <user1 at example.com>
> >> To: "user2 at hoge.example.com" <user2 at example.com>
> >> ↓
> >> a uid fetch 43056 (envelope)
> >> * 1861 FETCH (UID 43056 ENVELOPE ("Thu, 30 Jul 2020 13:53:59 +0900" 
> >> "test1" (("user1 at fuga.example.com" NIL "user1" "example.com")) 
> >> (("user1 at fuga.example.com" NIL "user1" "example.com")) 
> >> (("user1 at fuga.example.com" NIL "user1" "example.com")) 
> >> (("user2 at hoge.example.com" NIL "user2" "example.com")) NIL NIL NIL 
> >> "<WLXvFmpAZFNeQbPPITjRwimDyamnBm2 at test>"))
> > 
> > This is a valid email address, and ENVELOPE reply is correct.
> 
> Agreed.
> 
> //Mike
> 
> -- 
> Michael Gratton.
> <https://mjog.vee.net>
> 
> 
> 
--
TACHIBANA Masashi  QUALITIA CO., LTD.
mailto:tachibana at qualitia.co.jp

株式会社クオリティア
https://www.qualitia.co.jp/