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JCSurez-7033 avatar image
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JCSurez-7033 asked ·

Change in exchange for the certificate

Good morning, I have acquired a simple certificate for Exchange but internally I have problems with the names when opening MS Outloook I have 2 security alerts:

I have already redirected the DNS and changed the main certificate names in exchange through Set-OutlookProvide EXCH, EXPR putting the name that the certificate covers, mail.mydomain.com, but this alert still appears.

How and where can I change these names in Exchange Server 2016 to eliminate this alert.

Thanks
Regards

office-exchange-server-administration
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1 Answer

EricYin-MSFT avatar image
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EricYin-MSFT answered ·

Hi,
Are you using an internal or external computer that got the certificate error?
What's the URL you set for autodiscover? Run Get-ClientAccessService|fl uri to check that.
Does your current certificate only covers "mail.mydomain.com"? Normally people would have "autodiscover.domain.com" included in cert as well: https://practical365.com/exchange-server/exchange-2010-faq-autodiscover-names-ssl-certificate/
Besides, the host name(which used by client applications to connect to Exchange), the internal/external URLs and names of OWA, ActiveSync, EAC, EWS, Outlook Anywhere etc. should be added into certificates, because only a single certificate can be associated with a website and all services are offered under a single website by default, all the names that clients of these services use must be in the certificate.


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