Re: Gnus generates an invalid To header

[Tassilo Horn <tassilo@member.fsf.org>]

Reiner Steib <reinersteib+gmane@imap.cc> writes:

Hi Reiner,

>> Reply-To: "kontakt@tieraerztliche-klinik.com" <Tierklinik Kaiserberg Duisburg>
>> From: <kontakt@tieraerztliche-klinik.com>
>>
>> When I want to reply to it (R or r) Gnus generates the following To
>> header:
>>
>> To: "kontakt@/usr/bin/idn: tld_check_4z: missing inputtieraerztliche-klinik.com" <Tierklinik Kaiserberg Duisburg>
>
> This looks like the output of the IDNA program (/usr/bin/idn).  I
> don't have IDNA installed, so I get (disabling it does the same [1]):
>
> ,----
> | To: "kontakt@tieraerztliche-klinik.com" <Tierklinik Kaiserberg Duisburg>
> `----
>
> This is exactly the bogus Reply-To the sender requested.
>
> By edebugging `message-idna-to-ascii-rhs-1', I found that it calls
> (idna-to-ascii rhs) with `rhs' = "" because the right hand side of
> "tierklinikkaiserbergduisburg" is the empty string.  Maybe message
> should just return the same header instead if calling `idna-to-ascii'
> if `rhs' is empty?

With "the same header" you mean the complete bogus Reply-To header?  I
don't think that would be good, because then it would possibly be sent
to a local user.  And sending to a wrong recipient is much worse than
not sending at all.

Bye,
Tassilo