Hi, Thank you for your reply.
-- Tachibana ----- Original Message ----- > On Tue, 1 Sep, 2020 at 09:59, Timo Sirainen <t...@sirainen.com> wrote: > > On 1. Sep 2020, at 6.24, TACHIBANA Masashi <tachib...@qualitia.co.jp> > > wrote: > >> > >> Hi, > >> > >> Is this expected or not? > >> > >> From: us...@fuga.example.com <us...@example.com> > >> To: us...@hoge.example.com <us...@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@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: "us...@fuga.example.com" <us...@example.com> > >> To: "us...@hoge.example.com" <us...@example.com> > >> ↓ > >> a uid fetch 43056 (envelope) > >> * 1861 FETCH (UID 43056 ENVELOPE ("Thu, 30 Jul 2020 13:53:59 +0900" > >> "test1" (("us...@fuga.example.com" NIL "user1" "example.com")) > >> (("us...@fuga.example.com" NIL "user1" "example.com")) > >> (("us...@fuga.example.com" NIL "user1" "example.com")) > >> (("us...@hoge.example.com" NIL "user2" "example.com")) NIL NIL NIL > >> "<WLXvFmpAZFNeQbPPITjRwimDyamnBm2@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:tachib...@qualitia.co.jp 株式会社クオリティア https://www.qualitia.co.jp/