diff -urN smeserver-vacation-1.1.old/root/etc/e-smith/locale/en-us/etc/e-smith/web/functions/uservacations smeserver-vacation-1.1/root/etc/e-smith/locale/en-us/etc/e-smith/web/functions/uservacations
--- smeserver-vacation-1.1.old/root/etc/e-smith/locale/en-us/etc/e-smith/web/functions/uservacations	2015-01-04 20:11:51.526182805 +0100
+++ smeserver-vacation-1.1/root/etc/e-smith/locale/en-us/etc/e-smith/web/functions/uservacations	2015-01-04 20:14:25.614052879 +0100
@@ -37,7 +37,9 @@
           </p>
           <p>
              The primary domain is added to the address automatically, 
-             or you can insert a virtual domain.
+             or you can insert a virtual domain by replacing the domain part of the sender address
+             in the first line of the message with the virtual domain name (eg. replace the default
+             "From: user@primary.domain" with "From: user@virtual.domain").
              To change the vacation message back to the default type "reset".
           </p>
           ]]>