Past Incidents

We will update Mailcow to version 2025-07-legacy.

The release contains a security fix that was backported to the legacy release-train.

Context Info: With the new Mailcow Version 2025-03, some large changes were introduced. Adapting to these changes will take some time, which is why Mailcow is offering a legacy Update path until February 2026. Read more in the Mailcow Documentation

Start maintenance window: 21/07/2025 23:00
Stop maintenance window: 22/07/2025 02:00

We will update the following packages to the latest version.

• ffmpeg/oldstable-security 7:4.3.9-0+deb11u1 amd64 [upgradable from: 7:4.3.8-0+deb11u3]
• libavcodec58/oldstable-security 7:4.3.9-0+deb11u1 amd64 [upgradable from: 7:4.3.8-0+deb11u3]
• libavdevice58/oldstable-security 7:4.3.9-0+deb11u1 amd64 [upgradable from: 7:4.3.8-0+deb11u3]
• libavfilter7/oldstable-security 7:4.3.9-0+deb11u1 amd64 [upgradable from: 7:4.3.8-0+deb11u3]
• libavformat58/oldstable-security 7:4.3.9-0+deb11u1 amd64 [upgradable from: 7:4.3.8-0+deb11u3]
• libavresample4/oldstable-security 7:4.3.9-0+deb11u1 amd64 [upgradable from: 7:4.3.8-0+deb11u3]
• libavutil56/oldstable-security 7:4.3.9-0+deb11u1 amd64 [upgradable from: 7:4.3.8-0+deb11u3]
• libpostproc55/oldstable-security 7:4.3.9-0+deb11u1 amd64 [upgradable from: 7:4.3.8-0+deb11u3]
• libswresample3/oldstable-security 7:4.3.9-0+deb11u1 amd64 [upgradable from: 7:4.3.8-0+deb11u3]
• libswscale5/oldstable-security 7:4.3.9-0+deb11u1 amd64 [upgradable from: 7:4.3.8-0+deb11u3]
• redis-server/oldstable-security 5:6.0.16-1+deb11u7 amd64 [upgradable from: 5:6.0.16-1+deb11u6]
• redis-tools/oldstable-security 5:6.0.16-1+deb11u7 amd64 [upgradable from: 5:6.0.16-1+deb11u6]

Start maintenance window: 15/07/2025 23:00
Stop maintenance window: 16/07/2025 02:00

We will update the following packages to the latest version.

• blackfire/any 2:2.28.29 amd64 [upgradable from: 2:2.28.28]
• docker-ce/bullseye 5:28.3.2-1~debian.11~bullseye amd64 [upgradable from: 5:28.3.1-1~debian.11~bullseye]
• docker-ce-cli/bullseye 5:28.3.2-1~debian.11~bullseye amd64 [upgradable from: 5:28.3.1-1~debian.11~bullseye]
• docker-ce-rootless-extras/bullseye 5:28.3.2-1~debian.11~bullseye amd64 [upgradable from: 5:28.3.1-1~debian.11~bullseye]
• docker-compose-plugin/bullseye 2.38.2-1~debian.11~bullseye amd64 [upgradable from: 2.38.1-1~debian.11~bullseye]

Start maintenance window: 14/07/2025 23:00
Stop maintenance window: 15/07/2025 02:00

In course of our half-yearly security checks, we updated the globally used Diffie-Hellman group to a new set for TLS and SSH.