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Exchange 2013 IMAP Cert error.

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Last Modified: 2018-02-02
ok so I have resolved the issue with my exchange 2013 email server. I am trying to get the IMAP to work but everything checks out except for this.

Testing the SSL certificate to make sure it's valid.
       The SSL certificate failed one or more certificate validation checks.
      Additional Details
Elapsed Time: 323 ms.
      Test Steps
      The Microsoft Connectivity Analyzer is attempting to obtain the SSL certificate from remote server mail.fitzpro.com on port 993.
       The Microsoft Connectivity Analyzer wasn't able to obtain the remote SSL certificate.
      Additional Details
The certificate couldn't be validated because SSL negotiation wasn't successful. This could have occurred as a result of a network error or because of a problem with the certificate installation.
Elapsed Time: 298 ms.

I have verified that the cert is good because it works with IIS and Active sync, and SMTP.

anyone had any ideas?

Watch Question

Hemil AquinoNetwork Security Engineer
Distinguished Expert 2018

Yeah, you need to buy a third party certificate bro!
Did you apply your certificate to your IIS and IMAP?

Have you actually selected the certificate to use for IMAP in ECP?
Systems Administrator
This problem has been solved!
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Michael CardenzanaSystems Administrator


self resolved with some help from some other sources. my IMAP connection is now working after the steps that I lined out in the last response.


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