Add version tag to smtpmail-servers-requiring-authorization

* lisp/mail/smtpmail.el
(smtpmail-servers-requiring-authorization): Add version tag.

diff --git a/lisp/mail/smtpmail.el b/lisp/mail/smtpmail.el
index acd6f145e71286947bf5fef8d67e4630f4679500..f6fd1cd65eb8d330652ee622cc01c2ebaf3caa32 100644 (file)
--- a/lisp/mail/smtpmail.el
+++ b/lisp/mail/smtpmail.el
@@ -162,7 +162,8 @@ user/password credentials, and then retry using credentials if
 the server says that it requires it.  If the server name matches
 this regexp, smtpmail will send over the credentials on the first
 attempt."
-  :type '(choice regexp (const :tag "None" nil)))
+  :type '(choice regexp (const :tag "None" nil))
+  :version "27.1")
 
 ;; End of customizable variables.