hi, I have exchange 2007. One server with Client Access Role, Mailbox Role and Hub Role. I create a "Internet Send Connector" with this setting: "use domain name system (DNS) "MX" records to route mail automatically".I specify like FQDN in general tab, the name of my mx server (is not the exchange 2007). In EV I receive this error: Event Type: Error Event Source: MSExchangeTransport Event Category: TransportService Event ID: 12014 Date: 26/03/2008 Time: 22.32.28 User: N/A Computer: EXCHANGE Description: Microsoft Exchange couldn't find a certificate that contains the domain name mx.domain.it in the personal store on the local computer. Therefore, it is unable to support the STARTTLS SMTP verb for the connector Internet Connector by dns with a FQDN parameter of mx.domain.it. 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. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Any helps?? It's important verify and remove the condition caused by this problem? Thank's.