STARTTLS support for Notes client SMTP connections

STARTTLS is an extension to the plain text authentication protocols that allows the use of TLS or SSL encrypted connections when connecting to mail servers that support STARTTLS. When STARTTLS is used there is no need to configure a separate port for encrypted communication. This feature requires the IBM® Notes® 10 mail template (mail10.ntf).

To enable STARTTLS in an SMTP account on the Notes client, select STARTTLS in the Connection Security field of the Account form:
STARTTLS selection in SMTP account
Optionally, you can customize the SSL configuration in the Advanced tab:
SSL configuration in SMTP account enabled for STARTTLS