Hostname overriding accounts sub domain

Hi,

I'm using CWP for a subdomain that has a mail account, we are getting errors on the subdomain that it doesn't match any certificates, i.e. the main SSL certificate is for the hostname.

Happened on the last renewal last week, the admin area shows that the auto cert was successful amd there are 2 certificates.

https://www.sslshopper.com/ gives the error below.
None of the common names in the certificate match the name that was entered (mail.mydomain.co.uk). You may receive an error when accessing this site in a web browser.

Tried the update, yum update ca-certificates but the system was already up to date from this message I'm guessing (No packages marked for update)

Any help, will be much appreciated.

Thanks,
V.