add HTTP/3

As of now, feature with 178 votes is available in Plesk Onyx 17.9 Preview only: https://plesk.uservoice.com/forums/184549-feature-suggestions/suggestions/17924536-fail2ban-now-supports-ipv6-please-upgrade

It would be awesome to have this feature available on earlier versions of Plesk Onyx without the necessity to wait until Plesk Onyx 17.9 becomes stable.

Implementing the new standard WebAuthn would be the best solution for 2FA.

Ability to change settings in the mail autodiscover - for example, to set the mail server that will be set in the mail client.

Allow the possibility to use a custom Hostname for Mail Auto Discovery.

For example:
Having a desginated ServerName for the Mail server requests and use the Auto Discovery to configure the Domains using that ServerName instead of using the Domain name.

Add ability to disable Wildcard certificate option in Let's Encrypt

Add mcrypt module to Plesk PHP 7.2 and newer.
For previous PHP versions it's included out of the box.

Mcrypt 1.0.2 natively supports PHP 7.2+ (https://pecl.php.net/package/mcrypt/1.0.2)

It's, for example, required by Prestashop 1.7.x, which is quite popular among Plesk users.

Please make "My Extensions" the default when I click on Extensions. After the server is set up, I don't ever need the Catalog.

Add the count of messages in the postfix mailq to Advanced Monitoring and Grafana. Then we have the option to get alerts if mailq goes up, in case of spam events!

For Plesk with non-English default language (Vietnamese, for example), notifications' content is still in English.

To change default Thresholds for Server Health Monitor it was possible by upload custom template.

For "Advanced Monitoring" it's possible to change Thresholds only via GUI. That is not fast if you have many servers.

It would be have to make a feature to be able to manage "Advanced Monitoring" via command line or via templates. It

Service plans should be more granular, it should be possible to allow the customer to change the Document root without allowing them to manage the domain name, etc.

Basically the objective would be to have split the "Domains management" permission.

Add a possibility setting up SmarterMail via command-line interface to allow server administrators to perform mailserver setup faster and automate.

By default the HTTP header 'x-powered-by: PleskLin' is added to HTTP responses.
And with PHP, even the version number is included: 'x-powered-by: PHP/7.3.5'

For security it is better to not give such information, as it may expose you are using outdated software with known vulnerabilities.
Currently it is possible to remove these headers, but it requires some manual actions using SSH (https://support.plesk.com/hc/en-us/articles/115000385274)

My suggestion is to create page to be able to manage such header additions for all websites and services.

There are scenarios where multiple databases for multiple domains have to be restored.

In such cases, it would be great to be able to mass import dumps from database backup files instead of going one by one manually importing them on a domain basis

Please add a possibility to show both IPv4 and IPv6 on the Plesk Home page inside the System Overview section, if there is a configured IPv6 address on the server.

Currently only the Plesk administrator can use REST API.
Suggestion is to allow also reseller and customer use REST API as it's done for XML API

Currently, management of additional Apache/nginx directives is available for Plesk Administrators only.

With Apache, it is possible for users to add custom directives via .htaccess file.

However, when running a Plesk server with nginx only hosting and a large number of customers, it takes a lot if time to configure nginx directives manually for each.

It is clear that additional Apache/nginx directives fields are hidden from Plesk users for security reasons, but it would be great to have an ability to enable this feature at your own risk.

Previous same suggestions that have been marked as "declined":
https://plesk.uservoice.com/forums/184549-feature-suggestions/suggestions/34285378
https://plesk.uservoice.com/forums/184549-feature-suggestions/suggestions/38760889
https://plesk.uservoice.com/forums/184549-feature-suggestions/suggestions/19087582

"/usr/local/psa/bin/reconfigurator" utility adds new IP to interface and assigns all subscriptions to it.

Old IP still can be pinged and Rereaded in Plesk.
It's needed to remove this IP manually from the interface.
It's good to have a feature to remove old IP automatically(IP replacement).