Certificate warnings - Outlook - OWA

Hi,

SBS 2011.

We started getting certificate errors and I am not sure why. We installed a certificate some time back and it worked fine. I have done some reading and tried the resolution mentioned inthis 940726 knowledge-base article. I have ensured that there is a SRV record for our internet domain:

_autodiscover._tcp.mydomain.com   SRV service location:
          priority       = 5
          weight         = 10
          port           = 443
          svr hostname   = remote.mydomain.com
remote.mydomain.com       internet address = 192.168.0.130

Note that the address returned is from our internal address block not the public address. I am not sure is that it the problem or not. However the SSL certificate is for the host remote.mydomain.com.

I have run the SBS console and re-added the trusted certificate. However if I visit https:/remote.mydomain.com/owa or https://remote.mydomain.com/AutoDiscover/AutoDiscover.xml I get a certificate error. The certificate being pushed out is not the one I purchased or asked the SBS console to install.

Can anyone offer any pointers?

Thanks,

Dermot.