X509 module service status


we have a certificate that will expire in 17 days and on some monitored servers the service checks reports it correctly but on others it sais the certificate is still valid for a year.

here you see the service checks reporting the certificate to be valid until 2021:

and here you can see the certificate being mentioned to only be valid for another 17 days

anybody has any idea?

Hm, just a shot in the dark but did you check time settings on your systems? On the Icinga Host, the Icinga Web Host and on your client? Is NTP running?