This depends on mail_smtpmode. Specify ssl when you are using SSL/TLS. Any other value will be ignored. If the server advertises STARTTLS capabilities, they might be used, but they cannot be enforced by this config option.
option
This depends on mail_smtpmode. Specify ssl when you are using SSL/TLS. Any other value will be ignored. If the server advertises STARTTLS capabilities, they might be used, but they cannot be enforced by this config option.