Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. crt.sh | example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
My web server is (include version):
Server Name sxb1plzcpnl490290
cPanel Version 94.0 (build 19)
Apache Version 2.4.54
PHP Version 7.4.29
MySQL Version 5.7.38-cll-lve
Shared IP Address 92.205.4.17_64
The operating system my web server runs on is (include version): Linux x86_64
My hosting provider, if applicable, is: tsoHost
I can login to a root shell on my machine (yes or no, or I don't know): I don't know
I'm using a control panel to manage my site (no, or provide the name and version of the control panel): see above
The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot): not using certbot
Your hostname autodiscover.smiths.org.uk redirects to https://cpanelemaildiscovery.cpanel.net/autodiscover/autodiscover.xml which is never going to work with regard to issuing a certificate. Do you actually require a certificate for all those hostnames? If not, just leave the ones out you don't require a certificate for, especially autodiscover.smiths.org.uk. If you do require a certificate for this hostname, I have absolutely NO idea how to stop cPanel from redirecting...
I'm the author of CertSage. @Osiris has the right idea. Usually you only want to put domain names together on a certificate if they share the same webroot directory (smiths.org.uk, www.smiths.org.uk, mail.smiths.org.uk). The other x.smiths.org.uk names are directed at cPanel and thus CertSage cannot acquire a certificate for them. As for gs-c.smiths.org.uk and www.gs-c.smiths.org.uk, I suspect those share a webroot directory of their own inside of public_html. Try putting a copy of certsage.php in that directory, changing line 18 of that copy to public $dataDirectory = "../../CertSage"; , and acquiring a separate certificate for just those two domain names.
