> 
> Am 12.05.2017 um 19:39 schrieb Per olof Ljungmark <p...@intersonic.se>:
> 
> Does Cyrus Imap support IDN (International Domain Names) as sender address or 
> is it just the delivery agent that takes care of this?
Not sure, what you mean in detail.

We successfully receive mail from IDN domain senders over EXIM / Cyrus, while 
it is typically not a good idea to have any IDN domain in an email address 
(lack of "standardization" / compatibility). But I’m not sure how reliable this 
works.

> Like, for instance, über or gösta.
> 
> Then of course is the question if there is support for 8bit mailbox names as 
> well.
For that what i have seen - not really.

In the past we recommended our users to avoid using i.e. german Umlauts within 
folder names, even if they seems to get „converted“ by cyrus in a working or 
even proper manner - there will be problems with several IMAP clients not 
liking this, which still have problems with that on their side…



hth a bit
cheerioh,


Niels Dettenbach

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