Currently my mailserver is
called domain.xxx, this causes problems with mxtoolbox.com
giving a error message: "Reverse DNS is not a valid Hostname".
Reverse DNS is correctly set, but I learned that I should not
have used a domain, but a subdomain like mail.domain.xxx.
I have a certificate for
domain.xxx on our mailserver.
I need to rename the server to
I would like to have a new
cert ready for the day we do the change.
If I click "Create CSR" on my
mailserver, does this overwrite the existing cert? I need the
existing cert to be valid until we switch.