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StefanoC66's avatar
StefanoC66
Iron Contributor
Nov 07, 2024

Test connectivity fails Mapi/https

we're using the https://testconnectivity.microsoft.com URL to test external connectivity to our on-prem Exchange 2016 servers.

the test failis with MAPI/HTTPS check as follows

 

Looking at the server's event log we found the following error.

 

And running the exchange healthchecker

Is it possible that the connectivity test is using an old cypher algorithm or is something wrong in the exchange configuration  ?

2016
Exchange Server
MAPI/HTTP
TLS 1.2

2 Replies

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  • randieriko's avatar
    randieriko
    Copper Contributor
    Nov 08, 2024

    check whether your exchange registry settings in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL is enabled for TLS 1.2?

    • StefanoC66's avatar
      StefanoC66
      Iron Contributor
      Nov 08, 2024

      Hello randieriko

      below the TLS 1.2 configuration

       

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