Hi All,
My company does cloud-based mail filtering and our last hop internally is basically a vanilla Windows server with IIS6.0 enabled for SMTP delivery to our clients, and our system uses SMTP sink to capture logging to a database for our client portal. A similar
setup is used to deliver mail outbound for clients who use us for relay.
We've been asked about TLS delivery but not all of our clients can or will implement TLS, and as I understand it IIS6.0 basically handles TLS as an all or nothing, there is no opportunistic option.
Is there an alternative I can use? Preferably either another feature/role I can enable for the virtual SMTP service, or a standard Windows add-on that we can still use with SMTP sink for our logging.