Question How do I add a sub domain to my primary domain?

[Deleted member 174786]

I want to make mail.hitech.us my mail server. Hitech.us is my primary domain. I want to add a certificate to it and check via that domain. I have the ip pointing to the mail.hitech.us on my server and it pings out. I have added mail.hitech.us to my hosts file. When I attempt to add the mail.hitech.us subdomain through my admin account, it cannot find hitech.us for me to add as a subdomain.

When I try to check with mail. I get this message:

Unable to establish secure SSL connection to mail.hitech.us[ Help ]
Server returned error: "SSL error: ok Hostname "mail.hitech.us" doesn't match any SANs: "hitech.us", "www.hitech.us" Valid hostnames: hitech.us,hitech.us,www.hitech.us"

Any suggests on how I add this?

Thanks!

 

[WebHostingAce]

You need a Wildcard Certificate.

 

[Deleted member 174786]

Thank you for the response but that doesn't tell me how to add the sub domain. If I cannot add the subdomain to the primary domain then I don't have anywhere to put the wildcard certificate...

 

[WebHostingAce]

You don't need a Subdomain.

Use *.hitech.us as your domain when you generate your CSR for the primary domain.