--- mail/mail-ops.c.orig	Mon May 20 17:19:55 2002
+++ mail/mail-ops.c	Mon May 20 17:20:08 2002
@@ -431,6 +431,8 @@
 	
 	camel_medium_add_header (CAMEL_MEDIUM (message), "X-Mailer",
 				 "Ximian Evolution " VERSION SUB_VERSION " " VERSION_COMMENT);
+	camel_medium_add_header (CAMEL_MEDIUM (message), "X-OS",
+				 "Gentoo GNU/Linux www.gentoo.org");
 	
 	camel_mime_message_set_date (message, CAMEL_MESSAGE_DATE_CURRENT, 0);