Exchange Edge is using self-signed certificate for the SMTP services and for subscribe new Exchange synchronization between Hub and Edge servers. Self-signed certificates are only valid for one year. To display certificate used by Exchange Server run this command: Get-ExchangeCertificate | fl To renew a self-signed certificate for Exchange Edge you can use Exchange Management [...]

Useful links: The OpenSSL Project: http://www.openssl.org/ OpenSSL for Windows: http://www.slproweb.com/products/Win32OpenSSL.html   We want to get an official SSL certificate from well-known public Certificate Authority (CA). We have to generate a certificate request, for example using OpenSSL.   Steps to request a certificate – to generate a CSR file (Certificate Signing Request) 1. Creating a private [...]