i have bought the certificate from third party however i am still getting the error as attached.
i have assigned server to one of my sub domain
exchange server to
both of the domains are forwarded to my ip address now when i created a certificate i have added the mail as well server domain in the generation process but it still doesnt work i have tried to do via wild cards which includes all the sub domain but it didnt succeed either.
the ip address i am assigining to is my internet provider which ressolve to something of the provider sub domain name please advice how to fix this issue