+ ;; Osamu Yamane <yamane@green.ocn.ne.jp>:
+ ;; SMTP auth fails because the SMTP server identifies
+ ;; only the first part of the string (delimited by
+ ;; new line characters) as a response from the
+ ;; client, and the rest as distinct commands.
+
+ ;; In my case, the response string is 80 characters
+ ;; long. Without the no-line-break option for
+ ;; base64-encode-sting, only the first 76 characters
+ ;; are taken as a response to the server, and the
+ ;; authentication fails.
+ (encoded (base64-encode-string response t)))