in Exchange server 2016 I assigned ssl cert it is "INVALID"

I want to assign SSL Certificate to my exchagne server 2016 via certificate authority from active directory,
all of the steps, done in proper way,  it show " invalid"
please help me

tnx
R. Rahimi
Ramazan RahimiIT ManagerAsked:
Who is Participating?
 
Hasin Ahmed ChoudharyConnect With a Mentor Exchange AdministratorCommented:
Try to import Root certificate also under Personal store. make sure complete chain of Cert is present on server.
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MAS (MVE)Connect With a Mentor Technical Department HeadCommented:
HI Ramazan Rahimi,
As commented by Hasin Ahmed Choudhary please try to import root CA certificate. i.e. Download the certificate chain.
Please check this on how to use internal CA for Exchange. This is for Exchange2013 but the same applies for Exchange 2016.
https://practical365.com/exchange-server/exchange-2013-ssl-certificate-private-certificate-authority/

Use this if you want to generate new CSR.
https://www.experts-exchange.com/articles/28662/Easy-CSR-creation-Exchange-2007-2010-and-2013.html
Submit the CSR using above and complete it using below
https://practical365.com/exchange-server/exchange-2016-complete-pending-ssl-certificate-request/

Using internal CA certificate is not a good idea. Maybe you will save $$ but for that you have to work worth $$$.
I strongly suggest you to buy a cheap certificate for $30-50 and make your life easy.
Please check this as well. You can chat with them and request for discount as well.  i.e. Multiple Domains UCC - $124.99/yr
secureserver.net


Thanks
MAS
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MaheshArchitectCommented:
The reason certificate shows invalid because either it cannot reach Certificate authority CRL revocation point or certificate chain is not trusted
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Hasin Ahmed ChoudharyExchange AdministratorCommented:
No further response from Author
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