![Testing Connection to TLS enabled mail server from Cognos Configuration fails with error “Mail server cannot be reached”. Testing Connection to TLS enabled mail server from Cognos Configuration fails with error “Mail server cannot be reached”.](https://www.ibm.com/support/pages/system/files/inline-images/image-20180725154043-2.png)
Testing Connection to TLS enabled mail server from Cognos Configuration fails with error “Mail server cannot be reached”.
![Email Server Tips : How To Check SMTP Outgoing Already Use Encryption/TLS Connection – Ahmad Imanudin Email Server Tips : How To Check SMTP Outgoing Already Use Encryption/TLS Connection – Ahmad Imanudin](https://i0.wp.com/imanudin.net/wp-content/uploads/2016/02/check-tls-connection.png?ssl=1)
Email Server Tips : How To Check SMTP Outgoing Already Use Encryption/TLS Connection – Ahmad Imanudin
How to test SMTP using Opportunistic TLS with Powershell and grab the public certificate a SMTP server is using
![Testing Connection to TLS enabled mail server from Cognos Configuration fails with error “Mail server cannot be reached”. Testing Connection to TLS enabled mail server from Cognos Configuration fails with error “Mail server cannot be reached”.](https://www.ibm.com/support/pages/system/files/inline-images/image-20180725153946-1.png)