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AS4: Updating the root and intermediate certificates of the SmartMetering PKI

The German Federal Office for Information Security (BSI) points out that the root and intermediate certificates of the SmartMetering PKI must be updated manually and regularly. Find out here how you, as a NoSpamProxy customer, can perform this update.

11.12.2025|Last edited:11.12.2025

How do I perform the update?

  1. Download the corresponding root or intermediate certificates from the individual providers.
  2. Add the certificates to NoSpamProxy Server using PowerShell. Use the following cmdlet:
Import-NspEdiAtEnergySmartMeteringCertificate -Path Path_to_certificate_file

Why doesn’t NoSpamProxy update the certificates automatically?

The BSI does not provide for automatic updates and explicitly states that customers must perform the update manually.

Why do you need to update the certificates?

If you do not update the certificates, the LDAP search for other market partner certificates will no longer work. In addition, disruptions in AS4 message traffic may occur.

Not yet using NoSpamProxy?

NoSpamProxy reliably protects your company from dangerous emails and offers many other security features. Request your free trial now!

Get your free NoSpamProxy trial now!
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