Add smtpmail cross-reference to 'auth-sources'.

* doc/misc/smtpmail.texi (Authentication): Add cross-reference
to 'auth-sources'.

(cherry picked from commit 6a864ef8f39b8ec25c33479a8ac57b62fd10cfe7)

diff --git a/doc/misc/smtpmail.texi b/doc/misc/smtpmail.texi
index 5f99acaf7d8de052c983d535ce8aa85c4553de04..12b4ea41810a39c3044c2758579634657b24cf82 100644 (file)
--- a/doc/misc/smtpmail.texi
+++ b/doc/misc/smtpmail.texi
@@ -225,7 +225,8 @@ send mail via a server and the SMTP server reports back that it
 requires authentication, Emacs (version 24.1 and later) prompts you
 for the user name and password to use, and then offers to save the
 information.  By default, Emacs stores authentication information in a
-file @file{~/.authinfo}.
+file @file{~/.authinfo}, but this can be changed by customizing
+@code{auth-sources} (@pxref{Authentication, Persisting Authinfo,,emacs}).
 
 @vindex smtpmail-servers-requiring-authorization
 Some SMTP servers may bandwidth-limit (or deny) requests from clients