Just adding new file (NOT PART OF THE BUILD) Got the ok from chofmann

mailnews/compose/resources/content/composebe_en.properties

@@ -0,0 +1,57 @@
+# The contents of this file are subject to the Netscape Public License
+# Version 1.0 (the "NPL"); you may not use this file except in
+# compliance with the NPL. You may obtain a copy of the NPL at
+# http://www.mozilla.org/NPL/
+#
+# Software distributed under the NPL is distributed on an "AS IS" basis,
+# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+# for the specific language governing rights and limitations under the
+# NPL.
+#
+# The Initial Developer of this code under the NPL is Netscape
+# Communications Corporation. Portions created by Netscape are
+# Copyright (C) 1998 Netscape Communications Corporation. All Rights
+# Reserved.
+#
+
+#
+# The following are used by the compose back end
+#
+## @name NS_MSG_UNABLE_TO_OPEN_FILE 
+12500=Mozilla is unable to open the file \n\%.200s.\n\n\Check the file name and try again.
+
+## @name NS_MSG_UNABLE_TO_OPEN_TMP_FILE
+12501=Mozilla is unable to open the temporary file\n\%.200s.\n\n\Check your 'Temporary Directory' setting and try again.
+
+## @name NS_MSG_UNABLE_TO_SAVE_TEMPLATE
+12502=Mozilla is unable to save your message as template.\n\Please verify that your Mail preferences are correct\n\and try again.
+
+## @name NS_MSG_UNABLE_TO_SAVE_DRAFT
+12503=Mozilla is unable to save your message as draft.\n\Please verify that your Mail preferences are correct\n\and try again.
+
+## @name NS_MSG_LOAD_ATTACHMNTS
+12504=Loading attachments...
+
+## @name NS_MSG_LOAD_ATTACHMNT
+12505=Loading attachment...
+
+## @name NS_MSG_COULDNT_OPEN_FCC_FILE
+12506=Couldn't open Sent Mail file.\n\Please verify that your Mail preferences are correct.
+
+## @name NS_MSG_CANT_POST_TO_MULTIPLE_NEWS_HOSTS
+12507=Can't post to multiple news hosts. Try again.
+
+## @name NS_MSG_ASSEMB_DONE_MSG
+12508=Assembling message...Done
+
+## @name NS_MSG_ASSEMBLING_MSG
+12509=Assembling message...
+
+## @name NS_MSG_NO_SENDER
+12509=No sender was specified.\n\Please fill in your email address in the\n\Mail and Newsgroup preferences.
+
+## @name NS_MSG_NO_RECIPIENTS
+12510=No recipients were specified.\n\Please enter a recipient in a To: line,\n\or a newsgroup in a Group: line..
+
+## @name NS_MSG_ERROR_WRITING_FILE
+12511=Error writing temporary file.