I have a co-existance of Exchange 2003 and Exchange 2010 and after installing a new 3rd party cert I'm getting The following error. All mail is flowing and OWA is working.
Microsoft Exchange could not find a certificate that contains the domain name Exchange.domain.local in the personal store on the local computer. Therefore, it is unable to support the STARTTLS SMTP verb for the connector Default EXCHANGE with a FQDN parameter of Exchange.domain.local. If the connector's FQDN is not specified, the computer's FQDN is used. Verify the connector configuration and the installed certificates to make sure that there is a certificate with a domain name for that FQDN. If this certificate exists, run Enable-ExchangeCertificate -Services SMTP to make sure that the Microsoft Exchange Transport service has access to the certificate key.
Our GoDaddy UC SAN cert is not allowed to have .local SAN names, so I have no way of adding it to the cert. Is it possible for me to install a local CA and generate a self signed cert for the personal store or would it be better to disable TLS for the receive connector?