Today we are upgrading our Plesk servers to Obsidian 18.0.26
Details of changes are as follows:
- Which domain to use to access Plesk via the standard HTTPS port can now be configured via the Plesk GUI. Go to Tools & Settings and look for Customize Plesk URL (under “General Settings”).
- Domains with the “Forwarding” hosting type now support HTTPS. The support for securing such domains with Let’s Encrypt certificates via the Let’s Encrypt extension will be added later. (PPP-42238)
- Plesk interface no longer partially fails to load on Plesk Obsidian servers protected by CloudFlare with RocketLoader enabled. Still, we do not recommend using RocketLoader with Plesk, as not only it will not speed up UI rendering, but may slow it down and cause UI to flicker.
- Updated xdebug to version 2.9.4.
- Updated uuid to version 1.1.0.
- Updated sw-engine to version 2.27.6.
- Updated sw-engine PHP to version 7.3.16.
- The File Sharing and Bandwidth Limiting (mod_bw) components will be deprecated in the next Plesk Obsidian release (18.0.27). Learn more.
- The “PHP Settings” button is no longer missing in Power User view on Plesk servers with the Restricted Mode turned on, “PHP version and handler management” enabled, and “Hosting settings management”, “Common PHP settings management”, and “Setup of potentially insecure web scripting options that override provider’s policy” disabled. (PPPM-11542)
- The “Activate the mail service” checkbox is no longer shown to customers during domain creation if their service plan does not include access to mail. (PPPM-11626)
- The date of the last backup is once again correctly written to the “BackupsSettings” table of the Plesk database. (PPPM-11721)
- Scheduled backups are now properly stored for X weeks instead of X days (X is determined by the value of the “Keep backup files for X weeks” option). (PPPM-11796)
- Full backups are no longer created instead of incremental ones if the server hostname contains one or more uppercase characters. (PPPM-11825)
- Browsing the Application Vault no longer results in the “Package with UID ‘’ not found” error. (PPP-48152)
- Storing a backup on Microsoft One Drive no longer fails if One Drive erroneously reports 0 GB free space remaining and the “Start the backup only if your server has the sufficient amount of free disk space” option is enabled. (EXTPLESK-1716)
- The pleskrestore utility can now be called via REST API. (EXTREST-112)
Linux
- Added the ability to set priority for backup processes. Go to Tools & Settings > Backup Manager (under “Tools & Resources”), click “Settings” and look for the “Run scheduled backup processes with low priority” and “Run all backup processes with low priority” options. (PPPM-10734)
- On Ubuntu 16.04 x64 servers, the installed iptables version is now returned correctly. (PPPM-9487)
- Running plesk repair db -y on a newly installed Plesk Obsidian server that has not yet been initialized no longer makes later attempts to initialize the server fail. (PPPM-11446)
- Changing a customer’s password no longer results in the “The external email address matches the primary one” error if the “Enable mail management functions in Plesk” option is disabled in Tools & Settings > Mail Server Settings (under “Mail”). (PPPM-11745)
- Custom error pages are now displayed correctly for domains served by nginx only. (PPPM-11748)
- Domains can now be added to the mail server blacklist if the Plesk interface language is set to German. (PPPM-11766)
- Read email messages fetched via the POP3 protocol are no longer marked as new after switching from Courier 5 to Dovecot. (PPPM-11776)
- On newly installed Plesk Obsidian servers the server IP address is now automatically added to the Fail2Ban trusted IP addresses list. (PPPM-11777)
- On CentOS 8 x64 servers, checking the status of the firewall via the systemctl status psa-firewall command no longer results in an error. (PPPM-11795)
- Updating Plesk no longer makes the names of some mail folders to become unreadable. (PPPM-11801, PPPM-11807)
- On Plesk servers using apache in tandem with nginx, clients’ IP addresses are now correctly logged in /var/log/httpd/access_log instead of the server’s IP address. (PPP-38930)
- nginx no longer returns the “504 Gateway Timeout” error when processing slow PHP scripts. (PPP-45489)
- Plesk no longer produces the “PHP Notice: Undefined variable: locale” error under specific circumstances. (PPP-48212)
- On CentOS 8 x64 and Red Hat Enterprise Linux 8 servers, Plesk installation and updates no longer fail if the network connection to the configured CentOS mirror is slow. (PI-658, PPP-48254)
- On CentOS 8 x64 and Red Hat Enterprise Linux 8 servers, Plesk updates no longer fail if certain Python 3 packages are installed on the server. (PPP-48266)
Windows
- Removed obsolete information from the notification shown when securing webmail with an SSL/TLS certificate. (PPPM-6184)
- Creating a backup on a mapped drive via the pleskbackup.exe utility no longer fails with the “The system cannot find the path specified” error. (PPPM-11761)
- Incremental backups now only contain new email messages instead of all email messages. (PPPM-11772)
- Updating Plesk on a server with a Microsoft SQL Server 2017 instance no longer fails. (PPPM-11785)
- Creating a Microsoft SQL Server database no longer fails if the limit on MySQL databases in the Service Plan is reached for the subscription. (PPP-46436)
Third-Party Component Updates
- Updated phpMyAdmin to version 5.0.2.
Linux
- Updated Roundcube to version 1.4.3. The “Elastic” responsive skin with full mobile device support is now enabled by default.
- Updated OpenSSL used by nginx to version 1.1.1f.
- Updated Dovecot to version 2.3.9.3.
- Updated Horde ActiveSync to version 2.41.3.
- Updated Horde Form to version 2.0.20.
- Updated Horde Image to version 2.6.1.
- Updated Horde Test to version 2.6.4.
- Updated Horde Socket Client to version 2.1.3.
Windows
- Updated .NET Core 3.1 to version 3.1.3.
- Updated .NET Core 2.1 to version 2.1.17.
- .NET Core 3.0 and 2.2 are no longer shipped with Plesk.
- Updated IIS URL Rewrite Module to version 7.2.1993.
