I have a critical problem on my email server. Our firewall is sending me belowing log message.
It says: Your mail server is impacted Denial of service Possible arbitrary code execution, affected product is OpenSSL 0.9.7. Have to upgrade.
Now, I need to upgrade openssl 0.9.7a to Openssl 0.9.81 version. But I dont know how to do it. I afraid if I upgrade this how affect to mail service of mail server.
Mail server is a Surgemail. We are using mirror server.
Mail servers certificate installed is a self-signed cert. MD5
I dont want to lost mail servers configuration or server stuck.
How to do, please give me suggestion and procedure?
Thank you in advance.