Clicking on a Domain's email section in the Dashboard causes Cloudron to totally restart!

[scooke]

So, I've sent you an email, but I've been poking around, and removed an IDN domain that didn't have an app installed. Even though it wasn't the initial domain that seemed to spark the problem, it could be related to the other little nugget that was in the logs, something about not being able to translate to ASCII.

If this is related, could there be an issue with IDN domains on Cloudron? I had both a Chinese domain, and a RtL domain. I've removed both, and so far when I go to a few different places in the Dashboard, and then click in Email, everything works smooth, the green circles appear almost instanteously (where before it took awhile).

One of the IDN's didn't actually have an A record pointing to the Cloudron (the Chinese one). Could that have caused some glitch?

[nebulon]

@scooke right, we are using the native nodejs resolver here https://nodejs.org/dist/latest-v14.x/docs/api/dns.html#dns_class_dns_resolver and it appears to be crashing there.

[luckow]

@scooke Universal Acceptance is a (not so) big issue for the internet. In short, for domains other than ascii, the internet seems to be broken.
There is an initiative around domains other than ascii called Universal Acceptance https://uasg.tech/
It's not just about Chinese domains. Try sending an email to thomas@müller.de, it will fail.

[nebulon]

To update, I can reproduce this with a chineses IDN and looking for a fix now.

[scooke]

@nebulon I wonder why this would pop up now. Both the Chinese domain and the RtL domain were on my Cloudron for a long time. Thanks for looking into it @nebulon.

And interesting link @luckow. I'm reading some of the info there now.

[girish]

@scooke Could be related to the fact that recent updates upgraded nodejs.

[scooke]

@luckow Before I send an email to Mr. Thomas Müller, will he be expecting it, or no? Is this someone real?

[luckow]

@scooke wait. let's see https://müller.de/ is a connected domain (not mine). And maybe there is a thomas there
Send out and say it's only a test

[scooke]

@luckow The email was returned!

<thomas@xn--mller-kva.de>: host w015e2f2.kasserver.com[85.13.157.81] said: 554
    5.7.1 <thomas@xn--mller-kva.de>: Relay access denied (in reply to RCPT TO command)

However, sending emails to my two IDN domains work fine. Even using the "real" name of the domain and not the punycode rendering. These are though MXroute.

I guess the issue is in the updated nodejs.

[nebulon]

@scooke we have traced this down to a nodejs bug apparently with the domain in question.
The upstream issue is at https://github.com/nodejs/node/issues/39397