config.inc.php

- change default of $CONF['admin_email'] to '' and updated the comment.
  IMPORTANT: If set, this will be used as mail sender for all mails
  (2.3.x used the currently logged admin's username in most cases).
  $CONF['admin_email'] = '' will match the 2.3.x behaviour.

functions.inc.php:
- new function smtp_get_admin_email() to get mail sender address
  ($CONF[admin_email] or currently logged in admin if not set)
- changes compared to Dale's patch: 
  - added @return in comment
  - switched to /** comment style

This commit is part of the huge cleanup patch by Dale Blount (lnxus@SF),
https://sourceforge.net/tracker/?func=detail&atid=937966&aid=3370510&group_id=191583


git-svn-id: https://svn.code.sf.net/p/postfixadmin/code/trunk@1093 a1433add-5e2c-0410-b055-b7f2511e0802

functions.inc.php

@@ -1340,6 +1340,19 @@ function smtp_mail ($to, $from, $data, $body = "") {
     return true;
 }
 
+/**
+ * smtp_get_admin_email
+ * Action: Get configured email address or current user if nothing configured
+ * Call: smtp_get_admin_email
+ * @return String - username/mail address
+ */
+function smtp_get_admin_email() {
+	global $CONF;
+	if(isset($CONF['admin_email']) && !empty($CONF['admin_email']))
+		return $CONF['admin_email'];
+	else
+		return authentication_get_username();
+}
 
 
 //