#define DTYPE(x) ((x) & 0x1f) /**< Mask for the Data Type */
-#define DT_NOT_EMPTY 0x40 /**< Empty strings are not allowed */
-#define DT_NOT_NEGATIVE 0x80 /**< Negative numbers are not allowed */
-
-#define DT_MAILBOX 0x40 /**< DT_PATH: Don't perform path expansions */
+#define DT_NOT_EMPTY 0x40 /**< Empty strings are not allowed */
+#define DT_NOT_NEGATIVE 0x80 /**< Negative numbers are not allowed */
+#define DT_MAILBOX 0x100 /**< DT_PATH: Don't perform path expansions */
/* subtypes for... */
#define DT_SUBTYPE_MASK 0xfe0 /**< Mask for the Data Subtype */