SOLVED IDN-domain addresses rejected if sent from Gmail

Zackarias Holtelius

Registered
May 24, 2018
2
0
1
Gothenburg, Sweden
cPanel Access Level
Root Administrator
Sending e-mails from Gmail to and IDN-address on cPanel has stopped working (from version 70?).
No recent changes has been made to DNS (hosted elsewhere).

From cPanel Mail Delivery Reports:
Code:
[B]Event[/B]: rejected
[B]Sender User[/B]: -remote-
[B]Sender Domain[/B]:
[B]From Address[/B]: [EMAIL][email protected][/EMAIL]
[B]Sender[/B]:
[B]Sent Time[/B]: May 24, 2018, 4:12:16 PM
[B]Sender Host[/B]: mail-io0-f176.google.com
[B]Sender IP[/B]: 209.85.223.176
[B]Authentication[/B]: unauthorized
[B]Spam Score[/B]: 0
[B]Recipient[/B]: [EMAIL][email protected][/EMAIL]
[B]Delivered To[/B]:
[B]Delivery User[/B]:
[B]Delivery Domain[/B]: domainwithnationalcharacters.se
[B]Router[/B]: reject
[B]Transport[/B]: **rejected**
[B]Out Time[/B]: May 24, 2018, 4:12:16 PM
[B]ID[/B]: 1fLqz7-000BLB-IR
[B]Delivery Host[/B]: mail-io0-f176.google.com
[B]Delivery IP[/B]: 209.85.223.176
[B]Size[/B]: 0 bytes
[B]Result[/B]: The mail server could not deliver mail to [EMAIL][email protected][/EMAIL]. The account or domain may not exist, they may be blacklisted, or missing the proper dns entries.
Any ideas?

Thanks!
 
Last edited by a moderator:

cPanelMichael

Administrator
Staff member
Apr 11, 2011
47,904
2,226
463
Hello @Zackarias Holtelius,

Can you verify which version of cPanel & WHM is installed on this system? EX:

Code:
cat /usr/local/cpanel/version
cPanel & WHM version 70.0.44 is now published to the CURRENT and RELEASE release tiers and includes a case that disables SMTPUTF8:

Fixed case CPANEL-20542: Explicitly disable SMTPUTF8.

Upon updating to this version, run the following commands to ensure the change is enabled and verify if it solves the problem you are facing:

Code:
/scripts/buildeximconf
/scripts/restartsrv_exim
Prior to this, cPanel & WHM version 70.0.41 included a change that enabled SMTPUTF8 support with Exim, thus potentially leading to the issue you described.

Thank you.
 

cPanelMichael

Administrator
Staff member
Apr 11, 2011
47,904
2,226
463
Hello,

I'm glad to see that helped. I've marked this thread as solved.