CORRECTION: SwissSign - renewal of S/MIME Silver certificates (On Prem)

In order to ensure that the automatic renewal of the SwissSign Silver Certificate revocation goes smoothly for the SEPPmail Appliances, we recommend the following setting changes to be in effect as soon as possible (and not later than 22.04.2026 at 15:00 GMT+2):
Under MPKI Settings, enable the following:

• “Automatically renew expiring certificates if validity days left less than”
• “Automatically create certificates for active users without certificates” (This will ensure that the Automatic Renewal Job, that takes place nightly, will be able to also reissue the revoked SwissSign certificates. This is only necessary, if these changes were not implemented before Tuesday, 21.04.2026 at 9:00 p.m.)

We also highly recommend, that the “Automatically renew expiring certificates if validity days left less than” Option be set to 362 days. This is so that all of the certificates that are potentially marked for revocation are renewed before the revocation takes place. Therefore, there is no interruption of certificate services. The setting changes mentioned above can safely be reverted starting 23.04.2026.