IDN - Need help

Walter H. Walter.H at
Sun Jun 18 08:07:55 EDT 2017

On 18.06.2017 14:00, 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,
IDN domains are internally like


see here ...

and I don't see a reason why not accepting

-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 3491 bytes
Desc: S/MIME Cryptographic Signature
URL: <>

More information about the Info-cyrus mailing list