Platform: SBS 2008
Problem area: Exchange 2007
Hello there
On observing a certificate expiry waring in the event logs for Exchange, I went ahead and created a new certificate using th ecommand New-ExchangeCertificateand the problem was fixed.
Since then, and I believe it may be related, I have had problem l when using an authenticated SmartHost on the send connector. We are using the authenticated SMTP service with dyn.com.
When activating the service and attempt to send messages, the queue shows a451 Temporary local problem – please try again later. If I configure the SmartHost with the mail server from the ISP, which doesn’t require authentication, there is no problem. I have also tested SmartHost using the credentials of the Dyn SMTP service on another a server and there it works fine there.
I figure there is an authentication issue with certificate verification. The server has a current trusted CA certificate installed. Is it a problem with the binding of Exchange SMTP to this certificate?
MIS5000