Firstly, thank you for taking the time to read my post. Looking for some advice and help please with the following scenario.
A Windows Server 2008 physical box running Exchange 2010 SP3 (Latest Roll-up) - 14.03.0513.000
I am doing a test migration before moving our small user base (25-50) to O365 permanently.
I have setup Azure AD Connect and sync'd two test users. All works good, users can sign in on Azure with their current windows (UPN) creds.
When running the migration wizard i am doing so from a domain joined member (W7 - 64 bit) which I believe is okay to do-so.
All steps of the migration pass, i.e tenant e-mail addresses added to all mailboxes with the default policy applied.
However, at the last hurdle I am receiving the following message:-
The connection to the server 'mail.example.com' could not be completed.
The call to 'https://mail.example.com/EWS/mrsproxy.svc' failed. Error details: Could not establish secure channel for SSL/TLS with authority 'mail.example.com'. --> The request was aborted: Could not create SSL/TLS secure channel..
Could not establish secure channel for SSL/TLS with authority 'mail.example.com'.
The request was aborted: Could not create SSL/TLS secure channel."
*Please note I have replace our domain with example.
We have a 3rd party cert (digicert).
MRSProxy is enabled
Service responds with creds if i browse to the link.
I have enabled/disabled the proxy / reset IIS etc. and to no avail.
Hoping for anything else I can try in terms of troubleshooting.
Thanks for taking the time to read