Mail relaying

Export StartTLS certificate from SMTP server

René Jorissen on May 5, 2015 2 Comments • Tags: #certificate #export #smtp #smtpoffice365com #starttls

While configuring Office365 as the messaging (SMTP) server within Aruba ClearPass, I needed to upload the certificate from the StartTLS session to the certificate trust list from ClearPass. I had to export the certificate for via the following OpenSSL command: openssl s_client -showcerts -starttls smtp -crlf -connect After running the command, you will see … Read More