"View mail" with modern UI

[7224jobe]

Hi everybody, if an user has modern UI as default web client, when I try to use "View mail" function from admin web interface I receive an error from the browser: SSL_ERROR_RX_RECORD_TOO_LONG
I noticed that I have to remove :8080 from the URL to be able to see that user webmail:
From:
https://zimbra.domain.com:8080/modern/
To:
https://zimbra.domain.com/modern/

With classic UI everything works without changing the URL. Is there a setting to configure to avoid this behavior? To be clear, our Zimbra is normally working on port 443 (with auto redirect from 80), but "View mail" opens in a new tab using port 8080 in the URL.

Thanks!

[Klug]

Is the zimbraPublicServiceHostname (and Port and Protocol) correctly setup for the domain?

[7224jobe]

Thanks Klug, those attributes were not set for the domain. After setting those attributes, view mail started working with Modern UI, too.