The most important thing for me is I don’t know how to type those letters on my
English keyboard ☹
But yes I agree, forcing Latin chars is the best way to solve this problem.
From: Michele Neylon - Blacknight
Sent: Tuesday, November 19, 2019 3:21 PM
To: David Guo ; Thomas Hungenberg ;
anti-abuse-wg@ripe.net
Subject: Re: [anti-abuse-wg] Non-ASCII characters in abuse-mailbox addresses
Why?
It’s an EAI issue more than anything else.
If your email client or server can’t handle UTF-8 then doing the punycode
conversion is unlikely to help
I’d also encourage RIPE NOT to force Latin characters only – the RIPE region
covers multiple languages which are not Latin based and if anything it should
be leading by example
More details on EAI and UA issues here:
https://uasg.tech/
Regards
Michele
--
Mr Michele Neylon
Blacknight Solutions
Hosting, Colocation & Domains
https://www.blacknight.com/
https://blacknight.blog/
Intl. +353 (0) 59 9183072
Direct Dial: +353 (0)59 9183090
Personal blog: https://michele.blog/
Some thoughts: https://ceo.hosting/
---
Blacknight Internet Solutions Ltd, Unit 12A,Barrowside Business Park,Sleaty
Road,Graiguecullen,Carlow,R93 X265,Ireland Company No.: 370845
From: anti-abuse-wg
mailto:anti-abuse-wg-boun...@ripe.net>> on
behalf of David Guo via anti-abuse-wg
mailto:anti-abuse-wg@ripe.net>>
Reply to: David Guo mailto:da...@xtom.com>>
Date: Tuesday 19 November 2019 at 13:34
To: Thomas Hungenberg mailto:t...@cert-bund.de>>,
"anti-abuse-wg@ripe.net<mailto:anti-abuse-wg@ripe.net>"
mailto:anti-abuse-wg@ripe.net>>
Subject: Re: [anti-abuse-wg] Non-ASCII characters in abuse-mailbox addresses
Oh you already tried and it works. I suggest RIPE can convert the IDN domains
to punnycode on database.
From: David Guo mailto:da...@xtom.com>>
Sent: Tuesday, November 19, 2019 2:32:54 PM
To: Thomas Hungenberg mailto:t...@cert-bund.de>>;
anti-abuse-wg@ripe.net<mailto:anti-abuse-wg@ripe.net>
mailto:anti-abuse-wg@ripe.net>>
Subject: Re: [anti-abuse-wg] Non-ASCII characters in abuse-mailbox addresses
Did you try IDN / Punnycode converter?
Try abuse@xn--zrich-kva.email<mailto:abuse@xn--zrich-kva.email> ?
From: anti-abuse-wg
mailto:anti-abuse-wg-boun...@ripe.net>> on
behalf of Thomas Hungenberg mailto:t...@cert-bund.de>>
Sent: Tuesday, November 19, 2019 2:27:13 PM
To: anti-abuse-wg@ripe.net<mailto:anti-abuse-wg@ripe.net>
mailto:anti-abuse-wg@ripe.net>>
Subject: [anti-abuse-wg] Non-ASCII characters in abuse-mailbox addresses
Hi,
some abuse contacts registered with RIPE use non-ascii characters with
the abuse-mailbox addresses, e.g.
% Abuse contact for '195.78.76.0 - 195.78.77.255' is 'abuse@zürich.email'
However, the corresponding MTA does not support SMTPUTF8:
7B579403C6: to=mailto:abuse@zürich.email>>,
relay=mail.xn--zrich-kva.email[109.95.241.50]:25, delay=0.33,
delays=0.01/0/0.32/0, dsn=5.6.7, status=bounced (SMTPUTF8 is required, but was
not offered by host mail.xn--zrich-kva.email[109.95.241.50])
(In this particular case, sending email to the IDNA representation of the
email address mailto:abuse@xn--zrich-kva.email>>
works.)
In our experience, using umlauts and other non-ascii characters in
(the host part of) email addresses still cause a lot of problems in general.
Even if the recipient's MX supports SMTPUTF8 correctly, MTAs on the transport
way may fail to handle SMTPUTF8 messages.
To prevent such problems and make sure all abuse mailboxes can be addressed,
I wonder if the values of abuse-mailbox attributes should be restricted to
ASCII characters only.
What do you think?
- Thomas
