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Proxmox is a commercial company which offers specialized products based on Debian. The company has launched Proxmox Mail Gateway version 6.4 which is based on Debian 10.9 "Buster". The release announcement covers the highlights of the new version: "Full integration of the ACME protocol via the GUI: create valid and trusted certificates for domains with Let's Encrypt. General certificate management via GUI: upload custom certificates from the web interface. SpamAssassin 3.4.5 with support for external SpamAssassin update channels - Proxmox Mail Gateway will now fetch verified updates from external rule channels and the KAM ruleset channel is available. Improved management of the Spam Quarantine: display the quarantined emails of all users at once in the admin view. TLS-logging improvements: The Proxmox Message Tracking Center now shows when an outbound connection is established over TLS. Enhancements to the integration of Proxmox Backup Server: getting notification emails if you have configured a Proxmox Backup Server Remote is now possible."

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"SparkyLinux 2021.03 of the semi-rolling line is out. It is the first snapshot SparkyLinux in 2021 and it is based on the Debian 'Bullseye'. Changes: packages upgraded from Debian testing repositories as of March 5, 2021; Linux kernel 5.10.13 (5.11.3 and 5.12-rc2 in SparkyLinux unstable repositories); Firefox 86.0 and Thunderbird 78.8.0; LibreOffice 7.0.4.2; LXQt 0.16.0, MATE 1.24.1, Xfce 4.16, Openbox 3.6.1; new edition with KDE Plasma 5.20.5; VLC 3.0.12; Exaile 4.1.0; Calamares 3.2.37 with kpmcore 20.12.3; SparkyLinux APTus AppCenter 20210302; added extra keyboard shortcuts to Xfce, LXQt and Openbox...."

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"We are pleased to announce the release of Qubes OS 4.0.4. This is the fourth stable release of Qubes 4.0. It includes many updates over the initial 4.0 release, including: all 4.0 dom0 updates to date; Fedora 32 TemplateVM; Debian 10 TemplateVM; Whonix 15 Gateway and Workstation TemplateVMs; Linux kernel 5.4 by default. If you installed Qubes 4.0, 4.0.1, 4.0.2, or 4.0.3 and have fully updated, then your system is already equivalent to a Qubes 4.0.4 installation. No further action is required. Regardless of your current OS, if you wish to install (or reinstall) Qubes 4.0 for any reason, then the 4.0.4 ISO makes this more convenient and secure, since it bundles all Qubes 4.0 updates to date."

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"The first update of the year will be an enormous one. We have been working hard in the lab to update the underlying operating system to harden and improve IPFire and we have added WPA3 client support and made DNS faster and more resilient against broken Internet connections. This is probably the release with the largest number of package updates. This is necessary for us to keep the system modern and adopt any fixes from upstream projects. The DNS proxy working inside IPFire will now reuse any TLS and TCP connections for DNS resolution making it substantially faster. Before, a TCP or TLS connection had to be opened and closed after a response was received causing a lot of overhead. Please consider if your setup can run DNS-over-TLS to protect your privacy."

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"The first update of the year will be an enormous one. We have been working hard in the lab to update the underlying operating system to harden and improve IPFire and we have added WPA3 client support and made DNS faster and more resilient against broken Internet connections. This is probably the release with the largest number of package updates. This is necessary for us to keep the system modern and adopt any fixes from upstream projects. The DNS proxy working inside IPFire will now reuse any TLS and TCP connections for DNS resolution making it substantially faster. Before, a TCP or TLS connection had to be opened and closed after a response was received causing a lot of overhead. Please consider if your setup can run DNS-over-TLS to protect your privacy."

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