- ;; smtpmail-smtp-service 25 ;; 25 is default -- uncomment and edit if needed
- ;; smtpmail-stream-type 'starttls
- ;; smtpmail-debug-info t
- ;; smtpmail-debug-verb t
- message-send-mail-function 'message-smtpmail-send-it)
+ ;; smtpmail-smtp-service 25 ;; 25 is default -- uncomment and edit if needed
+ ;; smtpmail-stream-type 'starttls
+ ;; smtpmail-debug-info t
+ ;; smtpmail-debug-verb t
+ message-send-mail-function 'message-smtpmail-send-it)
+
+Note that emacs 24 or newer is required for `smtpmail-stream-type`
+(and smtp authentication) to be effective.