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+/*++
+/* NAME
+/* mail_error 3
+/* SUMMARY
+/* mail error classes
+/* SYNOPSIS
+/* #include <mail_error.h>
+/*
+/* NAME_MASK mail_error_masks[];
+/* DESCRIPTION
+/* This module implements error class support.
+/*
+/* mail_error_masks[] is a null-terminated table with mail error
+/* class names and their corresponding bit masks.
+/*
+/* The following is a list of implemented names, with the
+/* corresponding bit masks indicated in parentheses:
+/* .IP "bounce (MAIL_ERROR_BOUNCE)"
+/* A message could not be delivered because it was too large,
+/* because was sent via too many hops, because the recipient
+/* does not exist, and so on.
+/* .IP "2bounce (MAIL_ERROR_2BOUNCE)"
+/* A bounce message could not be delivered.
+/* .IP "data (MAIL_ERROR_DATA)"
+/* A message could not be delivered because a critical data
+/* file was unavailable.
+/* .IP "policy (MAIL_ERROR_POLICY)"
+/* Policy violation. This depends on what restrictions have
+/* been configured locally.
+/* .IP "protocol (MAIL_ERROR_PROTOCOL)"
+/* Protocol violation. Something did not follow the appropriate
+/* standard, or something requested an unimplemented service.
+/* .IP "resource (MAIL_ERROR_RESOURCE)"
+/* A message could not be delivered due to lack of system
+/* resources, for example, lack of file system space.
+/* .IP "software (MAIL_ERROR_SOFTWARE)"
+/* Software bug. The author of this program made a mistake.
+/* Fixing this requires change to the software.
+/* SEE ALSO
+/* name_mask(3), name to mask conversion
+/* LICENSE
+/* .ad
+/* .fi
+/* The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/* Wietse Venema
+/* IBM T.J. Watson Research
+/* P.O. Box 704
+/* Yorktown Heights, NY 10598, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+
+/* Utility library. */
+
+/* Global library. */
+
+#include "mail_error.h"
+
+ /*
+ * The table that maps names to error bit masks. This will work on most UNIX
+ * compilation environments.
+ *
+ * In a some environments the table will not be linked in unless this module
+ * also contains a function that is being called explicitly. REF/DEF and all
+ * that.
+ */
+const NAME_MASK mail_error_masks[] = {
+ "bounce", MAIL_ERROR_BOUNCE,
+ "2bounce", MAIL_ERROR_2BOUNCE,
+ "data", MAIL_ERROR_DATA,
+ "delay", MAIL_ERROR_DELAY,
+ "policy", MAIL_ERROR_POLICY,
+ "protocol", MAIL_ERROR_PROTOCOL,
+ "resource", MAIL_ERROR_RESOURCE,
+ "software", MAIL_ERROR_SOFTWARE,
+ 0, 0,
+};