Release 2026-06-29

OS4X Release 2026-06-29 can be downloaded online from the website www.os4x.com/downloads, the OS4Xvirtual images and the Docker containers are updated.

Current changes are:

  • OS4X Core:
    • Improved: Update of all OFTP2 ciphers (adjustment of input parameters, update to OpenSSL 3 default values, addition of new OFTP2 ciphers 8–10).
  • OS4X AS2:
    • New: The new Boost function enables all pending files to be sent „in one go,“ eliminating long waits for the next available time slice.
  • OS4X Enterprise:
    • New: All plugins that send emails gain the ability to freely define additional mail header variables (useful, for example, for auto-reply behavior).
    • Fixed: The „Approve„, „Email files„, and „Email files template“ plugins send emails that are compatible with a wider range of email clients.

As the latest version of OS4X available, we recommend to update to this version as fast as possible.