We recently renewed our wildcard certificate on our Exchange 2016 Server On Prem.
We've followed a guide that consisted of making an CSR and then completing the certificate request through IIS.
We've installed the certificate and applied it to IIS and SMPT services.
We have errors when connecting on mobile devices. We ran the Microsoft Analyzer and this is the error we get:
"Certificate trust is being validated.
Certificate trust validation failed.
The Microsoft Connectivity Analyzer is attempting to build certificate chains for certificate CN=*.company.com.
A certificate chain couldn't be constructed for the certificate.
The certificate chain has errors. Chain status = NotTimeValid."
The certificate works fine and we are also using it on another websites/devices and its also weird that it shows that the certificate is ok with the new certificate but with some SSL checker tools it still shows the older certificate.
What could be the cause of this ? We've found some things about the root and intermediate certificate but we have already tried to install all kind of certificate types that we got including ca.bundle to make sure that we have the root and intermediate certificates as well.
How can we proceed ? What should be the troubleshoot ?
Obs: We are not very familiar with certificates so any help/guide would be helpful, even though it may seem basic.