I am wondering what the best minimum way is to setup a receive connector for internal scanners on the network to use for relay, in order to e-mail PDF's/Images from the scanner to internal users' e-mail addresses.
Do you just create an "Internal" receive connector, configure for anonymous access, and specify the IP/IP-range/subnet of the "allowed" network scanners?
Do you need configure TLS in the receive connector?
I get "login error" from scanner trying to scan but there aren't any credentials set anywhere, so I'm not sure if it's a scanner issue or an Exchange receive-connector issue.
On one of my receive connectors, I believe it's configured properly, but I'm getting event log:
Microsoft Exchange could not find a certificate that contains the domain name relay.cafelocal.com in the personal store on the local computer. Therefore, it is unable to support the STARTTLS SMTP verb for the connector relay with a FQDN parameter of relay.cafelocal.com. 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.
I don't want to have to add anything to a certificate if I can help it.