• The BIND DNS server has already been deprecated and removed from Plesk for Windows.
    If a Plesk for Windows server is still using BIND, the upgrade to Plesk Obsidian 18.0.70 will be unavailable until the administrator switches the DNS server to Microsoft DNS. We strongly recommend transitioning to Microsoft DNS within the next 6 weeks, before the Plesk 18.0.70 release.
  • The Horde component is removed from Plesk Installer. We recommend switching to another webmail software supported in Plesk.

Resolved MariaDB 10.1 can do 1 million queries per second

What do you mean 'you update'?
Plesk doesn't ship MariaDB, it only downloads it from original OS vendor repo and it is quite likely it may be outdated there (especially for older OS). If your OS comes with MariaDB 10.1.21, then Plesk would run MariaDB 10.1.21 for clients.

[root@ppu17-0 templates]# rpm -qi mariadb | grep Vendor
Vendor : CentOS
 
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