Synch to Oort Gnus.

[elisp/gnus.git-] / texi / message.texi

diff --git a/texi/message.texi b/texi/message.texi
index aad61a9..b40bf27 100644 (file)
--- a/texi/message.texi
+++ b/texi/message.texi
@@ -1482,14 +1482,18 @@ This optional header will be computed by Message.
 
 @item Message-ID
 @cindex Message-ID
+@vindex message-user-fqdn
 @vindex mail-host-address
+@vindex user-mail-address
 @findex system-name
 @cindex Sun
+@cindex i-did-not-set--mail-host-address--so-tickle-me
 This required header will be generated by Message.  A unique ID will be
-created based on the date, time, user name and system name.  Message
-will use @code{system-name} to determine the name of the system.  If
-this isn't a fully qualified domain name (FQDN), Message will use
-@code{mail-host-address} as the FQDN of the machine.
+created based on the date, time, user name and system name.  For the
+domain part, message will look (in this order) at
+@code{message-user-fqdn}, @code{system-name}, @code{mail-host-address}
+and @code{message-user-mail-address} (i.e. @code{user-mail-address})
+until a probably valid fully qualified domain name (FQDN) was found.
 
 @item User-Agent
 @cindex User-Agent