IDN - Need help

[Walter H.]

Are you sure he's talking about the right thing as he mentioned this:

"The sender in question uses a @gmail address."

please first declare the part of E-mail address you are talking of ...

name @ domain

in case you're are talking about the 'name' part, there is not any 
character besides  [0-9a-z\.\-_] defined (see RFC 2821)
and in case you're talking about the 'domain' part, there is used 
Punycode, which results in the same character set;


On 19.06.2017 02:31, Nicola Nye wrote:
> Hi Per,
>
> Your mail has generated a lot of discussion in the FastMail office 
> about the state of Cyrus's international character support.
>
> The short answer is that you are correct: Cyrus lmtp does not offer 
> SMTPUTF8. We have added this to the roadmap as something we want to 
> address in the short-medium term.
>
> The plan is to write a bunch of tests and see where Cyrus has gaps, 
> then we'll know how much work we have to do to provide support. (If 
> anyone wants to join in this effort, let us know: we love getting more 
> folks involved, and it means you get the features you want, faster)
>
> https://github.com/cyrusimap/cyrus-imapd/issues/1647
>
> Cheers,
>
>    Nicola
>
>
> On Sun, Jun 18, 2017, at 10:00 PM, Per olof Ljungmark wrote:
>> I am re-posting this - would really like some help here. We need Cyrus
>> to accept mail with international characters in sender address. If
>> someone have experience please share, thanks!
>>
>> This is what Postfix reports when it tries to deliver to Cyrus:
>>
>> (SMTPUTF8 is required, but was not offered by host XXX
>> [/var/imap/socket/lmtp])
>>
>> (can't see anything relevant in the log from Cyrus)
>>
>> We want it to be delivered but I cannot figure out how - the sender
>> address has a "ü" in it.
>>
>> Really grateful for a hint.
>>
>> Thanks,
>>
>> //per

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