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Exchange 2013

pchettri
pchettri asked
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Last Modified: 2016-02-10
am seeing following error when I use test-casserverconnectivity. Some of my iphone 6 pus user keep losing connection.



Failure
[System.Net.WebException]: The underlying connection was closed: Could not establish
trust relationship for the SSL/TLS secure channel. Inner error
[System.Security.Authentication.AuthenticationException]: The remote certificate is
invalid according to the validation procedure.

I was able to reconnect them by removing user based device from ADsiedit but now it is not working either.

Also, I have connection error when I tried connecting from Outlook 2016. Email is working on Outlook 2013 and 2011 (mac).

Android users and old Iphone users are able to connect to email
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