Reminder for SEPPmail Appliance Updates

As we communicated to the partners in newsletters, webinars and release notes since the beginning of 2026, the SEPPmail Appliance versions released since then contain a number of fixes for security findings in OpenSSL and SEPPmail code.

The most recent patch release 15.0.4 is available since April 26 2026, with the most recent hotfix release 15.0.4.3 available since this week, May 11 2026.

We would like to remind our partners that they should update their SEPPmail Appliances as soon as possible to the newest available release.

Please find more information about the fixed security findings (including CVEs) and other release information in the extended release notes.

No action is required for customers and partners of the seppmail.cloud, since SEPPmail is updating the appliances in this environment as soon as they become available.